ConnectivityService.java revision 1edc73aa5dc24db39ec685f1950c5110699e301e
1/* 2 * Copyright (C) 2008 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17package com.android.server; 18 19import static android.Manifest.permission.MANAGE_NETWORK_POLICY; 20import static android.Manifest.permission.RECEIVE_DATA_ACTIVITY_CHANGE; 21import static android.net.ConnectivityManager.CONNECTIVITY_ACTION; 22import static android.net.ConnectivityManager.CONNECTIVITY_ACTION_IMMEDIATE; 23import static android.net.ConnectivityManager.TYPE_BLUETOOTH; 24import static android.net.ConnectivityManager.TYPE_DUMMY; 25import static android.net.ConnectivityManager.TYPE_MOBILE; 26import static android.net.ConnectivityManager.TYPE_MOBILE_CBS; 27import static android.net.ConnectivityManager.TYPE_MOBILE_DUN; 28import static android.net.ConnectivityManager.TYPE_MOBILE_FOTA; 29import static android.net.ConnectivityManager.TYPE_MOBILE_HIPRI; 30import static android.net.ConnectivityManager.TYPE_MOBILE_IA; 31import static android.net.ConnectivityManager.TYPE_MOBILE_IMS; 32import static android.net.ConnectivityManager.TYPE_MOBILE_MMS; 33import static android.net.ConnectivityManager.TYPE_MOBILE_SUPL; 34import static android.net.ConnectivityManager.TYPE_NONE; 35import static android.net.ConnectivityManager.TYPE_PROXY; 36import static android.net.ConnectivityManager.TYPE_VPN; 37import static android.net.ConnectivityManager.TYPE_WIFI; 38import static android.net.ConnectivityManager.TYPE_WIMAX; 39import static android.net.ConnectivityManager.getNetworkTypeName; 40import static android.net.ConnectivityManager.isNetworkTypeValid; 41import static android.net.NetworkPolicyManager.RULE_ALLOW_ALL; 42import static android.net.NetworkPolicyManager.RULE_REJECT_METERED; 43 44import android.app.AlarmManager; 45import android.app.Notification; 46import android.app.NotificationManager; 47import android.app.PendingIntent; 48import android.content.ActivityNotFoundException; 49import android.content.BroadcastReceiver; 50import android.content.ContentResolver; 51import android.content.Context; 52import android.content.ContextWrapper; 53import android.content.Intent; 54import android.content.IntentFilter; 55import android.content.pm.PackageManager; 56import android.content.res.Configuration; 57import android.content.res.Resources; 58import android.database.ContentObserver; 59import android.net.ConnectivityManager; 60import android.net.IConnectivityManager; 61import android.net.INetworkManagementEventObserver; 62import android.net.INetworkPolicyListener; 63import android.net.INetworkPolicyManager; 64import android.net.INetworkStatsService; 65import android.net.LinkAddress; 66import android.net.LinkProperties; 67import android.net.LinkProperties.CompareResult; 68import android.net.MobileDataStateTracker; 69import android.net.Network; 70import android.net.NetworkAgent; 71import android.net.NetworkCapabilities; 72import android.net.NetworkConfig; 73import android.net.NetworkInfo; 74import android.net.NetworkInfo.DetailedState; 75import android.net.NetworkFactory; 76import android.net.NetworkMisc; 77import android.net.NetworkQuotaInfo; 78import android.net.NetworkRequest; 79import android.net.NetworkState; 80import android.net.NetworkStateTracker; 81import android.net.NetworkUtils; 82import android.net.Proxy; 83import android.net.ProxyDataTracker; 84import android.net.ProxyInfo; 85import android.net.RouteInfo; 86import android.net.SamplingDataTracker; 87import android.net.UidRange; 88import android.net.Uri; 89import android.net.wimax.WimaxManagerConstants; 90import android.os.AsyncTask; 91import android.os.Binder; 92import android.os.Build; 93import android.os.Bundle; 94import android.os.FileUtils; 95import android.os.Handler; 96import android.os.HandlerThread; 97import android.os.IBinder; 98import android.os.INetworkManagementService; 99import android.os.Looper; 100import android.os.Message; 101import android.os.Messenger; 102import android.os.ParcelFileDescriptor; 103import android.os.PowerManager; 104import android.os.Process; 105import android.os.RemoteException; 106import android.os.ServiceManager; 107import android.os.SystemClock; 108import android.os.SystemProperties; 109import android.os.UserHandle; 110import android.os.UserManager; 111import android.provider.Settings; 112import android.security.Credentials; 113import android.security.KeyStore; 114import android.telephony.TelephonyManager; 115import android.text.TextUtils; 116import android.util.Slog; 117import android.util.SparseArray; 118import android.util.SparseIntArray; 119import android.util.Xml; 120 121import com.android.internal.R; 122import com.android.internal.annotations.GuardedBy; 123import com.android.internal.app.IBatteryStats; 124import com.android.internal.net.LegacyVpnInfo; 125import com.android.internal.net.NetworkStatsFactory; 126import com.android.internal.net.VpnConfig; 127import com.android.internal.net.VpnProfile; 128import com.android.internal.telephony.DctConstants; 129import com.android.internal.telephony.Phone; 130import com.android.internal.telephony.PhoneConstants; 131import com.android.internal.telephony.TelephonyIntents; 132import com.android.internal.util.AsyncChannel; 133import com.android.internal.util.IndentingPrintWriter; 134import com.android.internal.util.XmlUtils; 135import com.android.server.am.BatteryStatsService; 136import com.android.server.connectivity.DataConnectionStats; 137import com.android.server.connectivity.Nat464Xlat; 138import com.android.server.connectivity.NetworkAgentInfo; 139import com.android.server.connectivity.NetworkMonitor; 140import com.android.server.connectivity.PacManager; 141import com.android.server.connectivity.PermissionMonitor; 142import com.android.server.connectivity.Tethering; 143import com.android.server.connectivity.Vpn; 144import com.android.server.net.BaseNetworkObserver; 145import com.android.server.net.LockdownVpnTracker; 146import com.google.android.collect.Lists; 147import com.google.android.collect.Sets; 148 149import dalvik.system.DexClassLoader; 150 151import org.xmlpull.v1.XmlPullParser; 152import org.xmlpull.v1.XmlPullParserException; 153 154import java.io.File; 155import java.io.FileDescriptor; 156import java.io.FileNotFoundException; 157import java.io.FileReader; 158import java.io.IOException; 159import java.io.PrintWriter; 160import java.lang.reflect.Constructor; 161import java.net.HttpURLConnection; 162import java.net.Inet4Address; 163import java.net.Inet6Address; 164import java.net.InetAddress; 165import java.net.URL; 166import java.net.UnknownHostException; 167import java.util.ArrayList; 168import java.util.Arrays; 169import java.util.Collection; 170import java.util.GregorianCalendar; 171import java.util.HashMap; 172import java.util.HashSet; 173import java.util.Iterator; 174import java.util.List; 175import java.util.Map; 176import java.util.Objects; 177import java.util.Random; 178import java.util.concurrent.atomic.AtomicBoolean; 179import java.util.concurrent.atomic.AtomicInteger; 180 181import javax.net.ssl.HostnameVerifier; 182import javax.net.ssl.HttpsURLConnection; 183import javax.net.ssl.SSLSession; 184 185/** 186 * @hide 187 */ 188public class ConnectivityService extends IConnectivityManager.Stub 189 implements PendingIntent.OnFinished { 190 private static final String TAG = "ConnectivityService"; 191 192 private static final boolean DBG = true; 193 private static final boolean VDBG = false; 194 195 // network sampling debugging 196 private static final boolean SAMPLE_DBG = false; 197 198 private static final boolean LOGD_RULES = false; 199 200 // TODO: create better separation between radio types and network types 201 202 // how long to wait before switching back to a radio's default network 203 private static final int RESTORE_DEFAULT_NETWORK_DELAY = 1 * 60 * 1000; 204 // system property that can override the above value 205 private static final String NETWORK_RESTORE_DELAY_PROP_NAME = 206 "android.telephony.apn-restore"; 207 208 // Default value if FAIL_FAST_TIME_MS is not set 209 private static final int DEFAULT_FAIL_FAST_TIME_MS = 1 * 60 * 1000; 210 // system property that can override DEFAULT_FAIL_FAST_TIME_MS 211 private static final String FAIL_FAST_TIME_MS = 212 "persist.radio.fail_fast_time_ms"; 213 214 private static final String ACTION_PKT_CNT_SAMPLE_INTERVAL_ELAPSED = 215 "android.net.ConnectivityService.action.PKT_CNT_SAMPLE_INTERVAL_ELAPSED"; 216 217 private static final int SAMPLE_INTERVAL_ELAPSED_REQUEST_CODE = 0; 218 219 // How long to delay to removal of a pending intent based request. 220 // See Settings.Secure.CONNECTIVITY_RELEASE_PENDING_INTENT_DELAY_MS 221 private final int mReleasePendingIntentDelayMs; 222 223 private PendingIntent mSampleIntervalElapsedIntent; 224 225 // Set network sampling interval at 12 minutes, this way, even if the timers get 226 // aggregated, it will fire at around 15 minutes, which should allow us to 227 // aggregate this timer with other timers (specially the socket keep alive timers) 228 private static final int DEFAULT_SAMPLING_INTERVAL_IN_SECONDS = (SAMPLE_DBG ? 30 : 12 * 60); 229 230 // start network sampling a minute after booting ... 231 private static final int DEFAULT_START_SAMPLING_INTERVAL_IN_SECONDS = (SAMPLE_DBG ? 30 : 60); 232 233 AlarmManager mAlarmManager; 234 235 private Tethering mTethering; 236 237 private final PermissionMonitor mPermissionMonitor; 238 239 private KeyStore mKeyStore; 240 241 @GuardedBy("mVpns") 242 private final SparseArray<Vpn> mVpns = new SparseArray<Vpn>(); 243 244 private boolean mLockdownEnabled; 245 private LockdownVpnTracker mLockdownTracker; 246 247 /** Lock around {@link #mUidRules} and {@link #mMeteredIfaces}. */ 248 private Object mRulesLock = new Object(); 249 /** Currently active network rules by UID. */ 250 private SparseIntArray mUidRules = new SparseIntArray(); 251 /** Set of ifaces that are costly. */ 252 private HashSet<String> mMeteredIfaces = Sets.newHashSet(); 253 254 /** 255 * Sometimes we want to refer to the individual network state 256 * trackers separately, and sometimes we just want to treat them 257 * abstractly. 258 */ 259 private NetworkStateTracker mNetTrackers[]; 260 261 private Context mContext; 262 private int mNetworkPreference; 263 // 0 is full bad, 100 is full good 264 private int mDefaultInetConditionPublished = 0; 265 266 private Object mDnsLock = new Object(); 267 private int mNumDnsEntries; 268 269 private boolean mTestMode; 270 private static ConnectivityService sServiceInstance; 271 272 private INetworkManagementService mNetd; 273 private INetworkPolicyManager mPolicyManager; 274 275 private String mCurrentTcpBufferSizes; 276 277 private static final int ENABLED = 1; 278 private static final int DISABLED = 0; 279 280 // Arguments to rematchNetworkAndRequests() 281 private enum NascentState { 282 // Indicates a network was just validated for the first time. If the network is found to 283 // be unwanted (i.e. not satisfy any NetworkRequests) it is torn down. 284 JUST_VALIDATED, 285 // Indicates a network was not validated for the first time immediately prior to this call. 286 NOT_JUST_VALIDATED 287 }; 288 private enum ReapUnvalidatedNetworks { 289 // Tear down unvalidated networks that have no chance (i.e. even if validated) of becoming 290 // the highest scoring network satisfying a NetworkRequest. This should be passed when it's 291 // known that there may be unvalidated networks that could potentially be reaped, and when 292 // all networks have been rematched against all NetworkRequests. 293 REAP, 294 // Don't reap unvalidated networks. This should be passed when it's known that there are 295 // no unvalidated networks that could potentially be reaped, and when some networks have 296 // not yet been rematched against all NetworkRequests. 297 DONT_REAP 298 }; 299 300 /** 301 * used internally to change our mobile data enabled flag 302 */ 303 private static final int EVENT_CHANGE_MOBILE_DATA_ENABLED = 2; 304 305 /** 306 * used internally to clear a wakelock when transitioning 307 * from one net to another. Clear happens when we get a new 308 * network - EVENT_EXPIRE_NET_TRANSITION_WAKELOCK happens 309 * after a timeout if no network is found (typically 1 min). 310 */ 311 private static final int EVENT_CLEAR_NET_TRANSITION_WAKELOCK = 8; 312 313 /** 314 * used internally to reload global proxy settings 315 */ 316 private static final int EVENT_APPLY_GLOBAL_HTTP_PROXY = 9; 317 318 /** 319 * used internally to set external dependency met/unmet 320 * arg1 = ENABLED (met) or DISABLED (unmet) 321 * arg2 = NetworkType 322 */ 323 private static final int EVENT_SET_DEPENDENCY_MET = 10; 324 325 /** 326 * used internally to send a sticky broadcast delayed. 327 */ 328 private static final int EVENT_SEND_STICKY_BROADCAST_INTENT = 11; 329 330 /** 331 * Used internally to 332 * {@link NetworkStateTracker#setPolicyDataEnable(boolean)}. 333 */ 334 private static final int EVENT_SET_POLICY_DATA_ENABLE = 12; 335 336 /** 337 * Used internally to disable fail fast of mobile data 338 */ 339 private static final int EVENT_ENABLE_FAIL_FAST_MOBILE_DATA = 14; 340 341 /** 342 * used internally to indicate that data sampling interval is up 343 */ 344 private static final int EVENT_SAMPLE_INTERVAL_ELAPSED = 15; 345 346 /** 347 * PAC manager has received new port. 348 */ 349 private static final int EVENT_PROXY_HAS_CHANGED = 16; 350 351 /** 352 * used internally when registering NetworkFactories 353 * obj = NetworkFactoryInfo 354 */ 355 private static final int EVENT_REGISTER_NETWORK_FACTORY = 17; 356 357 /** 358 * used internally when registering NetworkAgents 359 * obj = Messenger 360 */ 361 private static final int EVENT_REGISTER_NETWORK_AGENT = 18; 362 363 /** 364 * used to add a network request 365 * includes a NetworkRequestInfo 366 */ 367 private static final int EVENT_REGISTER_NETWORK_REQUEST = 19; 368 369 /** 370 * indicates a timeout period is over - check if we had a network yet or not 371 * and if not, call the timeout calback (but leave the request live until they 372 * cancel it. 373 * includes a NetworkRequestInfo 374 */ 375 private static final int EVENT_TIMEOUT_NETWORK_REQUEST = 20; 376 377 /** 378 * used to add a network listener - no request 379 * includes a NetworkRequestInfo 380 */ 381 private static final int EVENT_REGISTER_NETWORK_LISTENER = 21; 382 383 /** 384 * used to remove a network request, either a listener or a real request 385 * arg1 = UID of caller 386 * obj = NetworkRequest 387 */ 388 private static final int EVENT_RELEASE_NETWORK_REQUEST = 22; 389 390 /** 391 * used internally when registering NetworkFactories 392 * obj = Messenger 393 */ 394 private static final int EVENT_UNREGISTER_NETWORK_FACTORY = 23; 395 396 /** 397 * used internally to expire a wakelock when transitioning 398 * from one net to another. Expire happens when we fail to find 399 * a new network (typically after 1 minute) - 400 * EVENT_CLEAR_NET_TRANSITION_WAKELOCK happens if we had found 401 * a replacement network. 402 */ 403 private static final int EVENT_EXPIRE_NET_TRANSITION_WAKELOCK = 24; 404 405 /** 406 * Used internally to indicate the system is ready. 407 */ 408 private static final int EVENT_SYSTEM_READY = 25; 409 410 /** 411 * used to add a network request with a pending intent 412 * includes a NetworkRequestInfo 413 */ 414 private static final int EVENT_REGISTER_NETWORK_REQUEST_WITH_INTENT = 26; 415 416 /** 417 * used to remove a pending intent and its associated network request. 418 * arg1 = UID of caller 419 * obj = PendingIntent 420 */ 421 private static final int EVENT_RELEASE_NETWORK_REQUEST_WITH_INTENT = 27; 422 423 424 /** Handler used for internal events. */ 425 final private InternalHandler mHandler; 426 /** Handler used for incoming {@link NetworkStateTracker} events. */ 427 final private NetworkStateTrackerHandler mTrackerHandler; 428 429 private boolean mSystemReady; 430 private Intent mInitialBroadcast; 431 432 private PowerManager.WakeLock mNetTransitionWakeLock; 433 private String mNetTransitionWakeLockCausedBy = ""; 434 private int mNetTransitionWakeLockSerialNumber; 435 private int mNetTransitionWakeLockTimeout; 436 private final PowerManager.WakeLock mPendingIntentWakeLock; 437 438 private InetAddress mDefaultDns; 439 440 // used in DBG mode to track inet condition reports 441 private static final int INET_CONDITION_LOG_MAX_SIZE = 15; 442 private ArrayList mInetLog; 443 444 // track the current default http proxy - tell the world if we get a new one (real change) 445 private volatile ProxyInfo mDefaultProxy = null; 446 private Object mProxyLock = new Object(); 447 private boolean mDefaultProxyDisabled = false; 448 449 // track the global proxy. 450 private ProxyInfo mGlobalProxy = null; 451 452 private PacManager mPacManager = null; 453 454 private SettingsObserver mSettingsObserver; 455 456 private UserManager mUserManager; 457 458 NetworkConfig[] mNetConfigs; 459 int mNetworksDefined; 460 461 // the set of network types that can only be enabled by system/sig apps 462 List mProtectedNetworks; 463 464 private DataConnectionStats mDataConnectionStats; 465 466 private AtomicInteger mEnableFailFastMobileDataTag = new AtomicInteger(0); 467 468 TelephonyManager mTelephonyManager; 469 470 // sequence number for Networks; keep in sync with system/netd/NetworkController.cpp 471 private final static int MIN_NET_ID = 100; // some reserved marks 472 private final static int MAX_NET_ID = 65535; 473 private int mNextNetId = MIN_NET_ID; 474 475 // sequence number of NetworkRequests 476 private int mNextNetworkRequestId = 1; 477 478 /** 479 * Implements support for the legacy "one network per network type" model. 480 * 481 * We used to have a static array of NetworkStateTrackers, one for each 482 * network type, but that doesn't work any more now that we can have, 483 * for example, more that one wifi network. This class stores all the 484 * NetworkAgentInfo objects that support a given type, but the legacy 485 * API will only see the first one. 486 * 487 * It serves two main purposes: 488 * 489 * 1. Provide information about "the network for a given type" (since this 490 * API only supports one). 491 * 2. Send legacy connectivity change broadcasts. Broadcasts are sent if 492 * the first network for a given type changes, or if the default network 493 * changes. 494 */ 495 private class LegacyTypeTracker { 496 497 private static final boolean DBG = true; 498 private static final boolean VDBG = false; 499 private static final String TAG = "CSLegacyTypeTracker"; 500 501 /** 502 * Array of lists, one per legacy network type (e.g., TYPE_MOBILE_MMS). 503 * Each list holds references to all NetworkAgentInfos that are used to 504 * satisfy requests for that network type. 505 * 506 * This array is built out at startup such that an unsupported network 507 * doesn't get an ArrayList instance, making this a tristate: 508 * unsupported, supported but not active and active. 509 * 510 * The actual lists are populated when we scan the network types that 511 * are supported on this device. 512 */ 513 private ArrayList<NetworkAgentInfo> mTypeLists[]; 514 515 public LegacyTypeTracker() { 516 mTypeLists = (ArrayList<NetworkAgentInfo>[]) 517 new ArrayList[ConnectivityManager.MAX_NETWORK_TYPE + 1]; 518 } 519 520 public void addSupportedType(int type) { 521 if (mTypeLists[type] != null) { 522 throw new IllegalStateException( 523 "legacy list for type " + type + "already initialized"); 524 } 525 mTypeLists[type] = new ArrayList<NetworkAgentInfo>(); 526 } 527 528 public boolean isTypeSupported(int type) { 529 return isNetworkTypeValid(type) && mTypeLists[type] != null; 530 } 531 532 public NetworkAgentInfo getNetworkForType(int type) { 533 if (isTypeSupported(type) && !mTypeLists[type].isEmpty()) { 534 return mTypeLists[type].get(0); 535 } else { 536 return null; 537 } 538 } 539 540 private void maybeLogBroadcast(NetworkAgentInfo nai, boolean connected, int type) { 541 if (DBG) { 542 log("Sending " + (connected ? "connected" : "disconnected") + 543 " broadcast for type " + type + " " + nai.name() + 544 " isDefaultNetwork=" + isDefaultNetwork(nai)); 545 } 546 } 547 548 /** Adds the given network to the specified legacy type list. */ 549 public void add(int type, NetworkAgentInfo nai) { 550 if (!isTypeSupported(type)) { 551 return; // Invalid network type. 552 } 553 if (VDBG) log("Adding agent " + nai + " for legacy network type " + type); 554 555 ArrayList<NetworkAgentInfo> list = mTypeLists[type]; 556 if (list.contains(nai)) { 557 loge("Attempting to register duplicate agent for type " + type + ": " + nai); 558 return; 559 } 560 561 list.add(nai); 562 563 // Send a broadcast if this is the first network of its type or if it's the default. 564 if (list.size() == 1 || isDefaultNetwork(nai)) { 565 maybeLogBroadcast(nai, true, type); 566 sendLegacyNetworkBroadcast(nai, true, type); 567 } 568 } 569 570 /** Removes the given network from the specified legacy type list. */ 571 public void remove(int type, NetworkAgentInfo nai) { 572 ArrayList<NetworkAgentInfo> list = mTypeLists[type]; 573 if (list == null || list.isEmpty()) { 574 return; 575 } 576 577 boolean wasFirstNetwork = list.get(0).equals(nai); 578 579 if (!list.remove(nai)) { 580 return; 581 } 582 583 if (wasFirstNetwork || isDefaultNetwork(nai)) { 584 maybeLogBroadcast(nai, false, type); 585 sendLegacyNetworkBroadcast(nai, false, type); 586 } 587 588 if (!list.isEmpty() && wasFirstNetwork) { 589 if (DBG) log("Other network available for type " + type + 590 ", sending connected broadcast"); 591 maybeLogBroadcast(list.get(0), false, type); 592 sendLegacyNetworkBroadcast(list.get(0), false, type); 593 } 594 } 595 596 /** Removes the given network from all legacy type lists. */ 597 public void remove(NetworkAgentInfo nai) { 598 if (VDBG) log("Removing agent " + nai); 599 for (int type = 0; type < mTypeLists.length; type++) { 600 remove(type, nai); 601 } 602 } 603 604 private String naiToString(NetworkAgentInfo nai) { 605 String name = (nai != null) ? nai.name() : "null"; 606 String state = (nai.networkInfo != null) ? 607 nai.networkInfo.getState() + "/" + nai.networkInfo.getDetailedState() : 608 "???/???"; 609 return name + " " + state; 610 } 611 612 public void dump(IndentingPrintWriter pw) { 613 for (int type = 0; type < mTypeLists.length; type++) { 614 if (mTypeLists[type] == null) continue; 615 pw.print(type + " "); 616 pw.increaseIndent(); 617 if (mTypeLists[type].size() == 0) pw.println("none"); 618 for (NetworkAgentInfo nai : mTypeLists[type]) { 619 pw.println(naiToString(nai)); 620 } 621 pw.decreaseIndent(); 622 } 623 } 624 625 // This class needs its own log method because it has a different TAG. 626 private void log(String s) { 627 Slog.d(TAG, s); 628 } 629 630 } 631 private LegacyTypeTracker mLegacyTypeTracker = new LegacyTypeTracker(); 632 633 public ConnectivityService(Context context, INetworkManagementService netManager, 634 INetworkStatsService statsService, INetworkPolicyManager policyManager) { 635 if (DBG) log("ConnectivityService starting up"); 636 637 NetworkCapabilities netCap = new NetworkCapabilities(); 638 netCap.addCapability(NetworkCapabilities.NET_CAPABILITY_INTERNET); 639 netCap.addCapability(NetworkCapabilities.NET_CAPABILITY_NOT_RESTRICTED); 640 mDefaultRequest = new NetworkRequest(netCap, TYPE_NONE, nextNetworkRequestId()); 641 NetworkRequestInfo nri = new NetworkRequestInfo(null, mDefaultRequest, new Binder(), 642 NetworkRequestInfo.REQUEST); 643 mNetworkRequests.put(mDefaultRequest, nri); 644 645 HandlerThread handlerThread = new HandlerThread("ConnectivityServiceThread"); 646 handlerThread.start(); 647 mHandler = new InternalHandler(handlerThread.getLooper()); 648 mTrackerHandler = new NetworkStateTrackerHandler(handlerThread.getLooper()); 649 650 // setup our unique device name 651 if (TextUtils.isEmpty(SystemProperties.get("net.hostname"))) { 652 String id = Settings.Secure.getString(context.getContentResolver(), 653 Settings.Secure.ANDROID_ID); 654 if (id != null && id.length() > 0) { 655 String name = new String("android-").concat(id); 656 SystemProperties.set("net.hostname", name); 657 } 658 } 659 660 // read our default dns server ip 661 String dns = Settings.Global.getString(context.getContentResolver(), 662 Settings.Global.DEFAULT_DNS_SERVER); 663 if (dns == null || dns.length() == 0) { 664 dns = context.getResources().getString( 665 com.android.internal.R.string.config_default_dns_server); 666 } 667 try { 668 mDefaultDns = NetworkUtils.numericToInetAddress(dns); 669 } catch (IllegalArgumentException e) { 670 loge("Error setting defaultDns using " + dns); 671 } 672 673 mReleasePendingIntentDelayMs = Settings.Secure.getInt(context.getContentResolver(), 674 Settings.Secure.CONNECTIVITY_RELEASE_PENDING_INTENT_DELAY_MS, 5_000); 675 676 mContext = checkNotNull(context, "missing Context"); 677 mNetd = checkNotNull(netManager, "missing INetworkManagementService"); 678 mPolicyManager = checkNotNull(policyManager, "missing INetworkPolicyManager"); 679 mKeyStore = KeyStore.getInstance(); 680 mTelephonyManager = (TelephonyManager) mContext.getSystemService(Context.TELEPHONY_SERVICE); 681 682 try { 683 mPolicyManager.registerListener(mPolicyListener); 684 } catch (RemoteException e) { 685 // ouch, no rules updates means some processes may never get network 686 loge("unable to register INetworkPolicyListener" + e.toString()); 687 } 688 689 final PowerManager powerManager = (PowerManager) context.getSystemService( 690 Context.POWER_SERVICE); 691 mNetTransitionWakeLock = powerManager.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, TAG); 692 mNetTransitionWakeLockTimeout = mContext.getResources().getInteger( 693 com.android.internal.R.integer.config_networkTransitionTimeout); 694 mPendingIntentWakeLock = powerManager.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, TAG); 695 696 mNetTrackers = new NetworkStateTracker[ 697 ConnectivityManager.MAX_NETWORK_TYPE+1]; 698 699 mNetConfigs = new NetworkConfig[ConnectivityManager.MAX_NETWORK_TYPE+1]; 700 701 // TODO: What is the "correct" way to do determine if this is a wifi only device? 702 boolean wifiOnly = SystemProperties.getBoolean("ro.radio.noril", false); 703 log("wifiOnly=" + wifiOnly); 704 String[] naStrings = context.getResources().getStringArray( 705 com.android.internal.R.array.networkAttributes); 706 for (String naString : naStrings) { 707 try { 708 NetworkConfig n = new NetworkConfig(naString); 709 if (VDBG) log("naString=" + naString + " config=" + n); 710 if (n.type > ConnectivityManager.MAX_NETWORK_TYPE) { 711 loge("Error in networkAttributes - ignoring attempt to define type " + 712 n.type); 713 continue; 714 } 715 if (wifiOnly && ConnectivityManager.isNetworkTypeMobile(n.type)) { 716 log("networkAttributes - ignoring mobile as this dev is wifiOnly " + 717 n.type); 718 continue; 719 } 720 if (mNetConfigs[n.type] != null) { 721 loge("Error in networkAttributes - ignoring attempt to redefine type " + 722 n.type); 723 continue; 724 } 725 mLegacyTypeTracker.addSupportedType(n.type); 726 727 mNetConfigs[n.type] = n; 728 mNetworksDefined++; 729 } catch(Exception e) { 730 // ignore it - leave the entry null 731 } 732 } 733 734 // Forcibly add TYPE_VPN as a supported type, if it has not already been added via config. 735 if (mNetConfigs[TYPE_VPN] == null) { 736 // mNetConfigs is used only for "restore time", which isn't applicable to VPNs, so we 737 // don't need to add TYPE_VPN to mNetConfigs. 738 mLegacyTypeTracker.addSupportedType(TYPE_VPN); 739 mNetworksDefined++; // used only in the log() statement below. 740 } 741 742 if (VDBG) log("mNetworksDefined=" + mNetworksDefined); 743 744 mProtectedNetworks = new ArrayList<Integer>(); 745 int[] protectedNetworks = context.getResources().getIntArray( 746 com.android.internal.R.array.config_protectedNetworks); 747 for (int p : protectedNetworks) { 748 if ((mNetConfigs[p] != null) && (mProtectedNetworks.contains(p) == false)) { 749 mProtectedNetworks.add(p); 750 } else { 751 if (DBG) loge("Ignoring protectedNetwork " + p); 752 } 753 } 754 755 mTestMode = SystemProperties.get("cm.test.mode").equals("true") 756 && SystemProperties.get("ro.build.type").equals("eng"); 757 758 mTethering = new Tethering(mContext, mNetd, statsService, mHandler.getLooper()); 759 760 mPermissionMonitor = new PermissionMonitor(mContext, mNetd); 761 762 //set up the listener for user state for creating user VPNs 763 IntentFilter intentFilter = new IntentFilter(); 764 intentFilter.addAction(Intent.ACTION_USER_STARTING); 765 intentFilter.addAction(Intent.ACTION_USER_STOPPING); 766 mContext.registerReceiverAsUser( 767 mUserIntentReceiver, UserHandle.ALL, intentFilter, null, null); 768 769 try { 770 mNetd.registerObserver(mTethering); 771 mNetd.registerObserver(mDataActivityObserver); 772 } catch (RemoteException e) { 773 loge("Error registering observer :" + e); 774 } 775 776 if (DBG) { 777 mInetLog = new ArrayList(); 778 } 779 780 mSettingsObserver = new SettingsObserver(mHandler, EVENT_APPLY_GLOBAL_HTTP_PROXY); 781 mSettingsObserver.observe(mContext); 782 783 mDataConnectionStats = new DataConnectionStats(mContext); 784 mDataConnectionStats.startMonitoring(); 785 786 mAlarmManager = (AlarmManager)mContext.getSystemService(Context.ALARM_SERVICE); 787 788 IntentFilter filter = new IntentFilter(); 789 filter.addAction(ACTION_PKT_CNT_SAMPLE_INTERVAL_ELAPSED); 790 mContext.registerReceiver( 791 new BroadcastReceiver() { 792 @Override 793 public void onReceive(Context context, Intent intent) { 794 String action = intent.getAction(); 795 if (action.equals(ACTION_PKT_CNT_SAMPLE_INTERVAL_ELAPSED)) { 796 mHandler.sendMessage(mHandler.obtainMessage 797 (EVENT_SAMPLE_INTERVAL_ELAPSED)); 798 } 799 } 800 }, 801 new IntentFilter(filter)); 802 803 mPacManager = new PacManager(mContext, mHandler, EVENT_PROXY_HAS_CHANGED); 804 805 mUserManager = (UserManager) context.getSystemService(Context.USER_SERVICE); 806 } 807 808 private synchronized int nextNetworkRequestId() { 809 return mNextNetworkRequestId++; 810 } 811 812 private void assignNextNetId(NetworkAgentInfo nai) { 813 synchronized (mNetworkForNetId) { 814 for (int i = MIN_NET_ID; i <= MAX_NET_ID; i++) { 815 int netId = mNextNetId; 816 if (++mNextNetId > MAX_NET_ID) mNextNetId = MIN_NET_ID; 817 // Make sure NetID unused. http://b/16815182 818 if (mNetworkForNetId.get(netId) == null) { 819 nai.network = new Network(netId); 820 mNetworkForNetId.put(netId, nai); 821 return; 822 } 823 } 824 } 825 throw new IllegalStateException("No free netIds"); 826 } 827 828 private int getConnectivityChangeDelay() { 829 final ContentResolver cr = mContext.getContentResolver(); 830 831 /** Check system properties for the default value then use secure settings value, if any. */ 832 int defaultDelay = SystemProperties.getInt( 833 "conn." + Settings.Global.CONNECTIVITY_CHANGE_DELAY, 834 ConnectivityManager.CONNECTIVITY_CHANGE_DELAY_DEFAULT); 835 return Settings.Global.getInt(cr, Settings.Global.CONNECTIVITY_CHANGE_DELAY, 836 defaultDelay); 837 } 838 839 private boolean teardown(NetworkStateTracker netTracker) { 840 if (netTracker.teardown()) { 841 netTracker.setTeardownRequested(true); 842 return true; 843 } else { 844 return false; 845 } 846 } 847 848 private NetworkState getFilteredNetworkState(int networkType, int uid) { 849 NetworkInfo info = null; 850 LinkProperties lp = null; 851 NetworkCapabilities nc = null; 852 Network network = null; 853 854 if (mLegacyTypeTracker.isTypeSupported(networkType)) { 855 NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType); 856 if (nai != null) { 857 synchronized (nai) { 858 info = new NetworkInfo(nai.networkInfo); 859 lp = new LinkProperties(nai.linkProperties); 860 nc = new NetworkCapabilities(nai.networkCapabilities); 861 network = new Network(nai.network); 862 } 863 info.setType(networkType); 864 } else { 865 info = new NetworkInfo(networkType, 0, getNetworkTypeName(networkType), ""); 866 info.setDetailedState(NetworkInfo.DetailedState.DISCONNECTED, null, null); 867 info.setIsAvailable(true); 868 lp = new LinkProperties(); 869 nc = new NetworkCapabilities(); 870 network = null; 871 } 872 info = getFilteredNetworkInfo(info, lp, uid); 873 } 874 875 return new NetworkState(info, lp, nc, network); 876 } 877 878 private NetworkAgentInfo getNetworkAgentInfoForNetwork(Network network) { 879 if (network == null) { 880 return null; 881 } 882 synchronized (mNetworkForNetId) { 883 return mNetworkForNetId.get(network.netId); 884 } 885 }; 886 887 private NetworkState getUnfilteredActiveNetworkState(int uid) { 888 NetworkInfo info = null; 889 LinkProperties lp = null; 890 NetworkCapabilities nc = null; 891 Network network = null; 892 893 NetworkAgentInfo nai = mNetworkForRequestId.get(mDefaultRequest.requestId); 894 895 if (!mLockdownEnabled) { 896 int user = UserHandle.getUserId(uid); 897 synchronized (mVpns) { 898 Vpn vpn = mVpns.get(user); 899 if (vpn != null && vpn.appliesToUid(uid)) { 900 // getUnderlyingNetworks() returns: 901 // null => the VPN didn't specify anything, so we use the default. 902 // empty array => the VPN explicitly said "no default network". 903 // non-empty array => the VPN specified one or more default networks; we use the 904 // first one. 905 Network[] networks = vpn.getUnderlyingNetworks(); 906 if (networks != null) { 907 if (networks.length > 0) { 908 nai = getNetworkAgentInfoForNetwork(networks[0]); 909 } else { 910 nai = null; 911 } 912 } 913 } 914 } 915 } 916 917 if (nai != null) { 918 synchronized (nai) { 919 info = new NetworkInfo(nai.networkInfo); 920 lp = new LinkProperties(nai.linkProperties); 921 nc = new NetworkCapabilities(nai.networkCapabilities); 922 network = new Network(nai.network); 923 } 924 } 925 926 return new NetworkState(info, lp, nc, network); 927 } 928 929 /** 930 * Check if UID should be blocked from using the network with the given LinkProperties. 931 */ 932 private boolean isNetworkWithLinkPropertiesBlocked(LinkProperties lp, int uid) { 933 final boolean networkCostly; 934 final int uidRules; 935 936 final String iface = (lp == null ? "" : lp.getInterfaceName()); 937 synchronized (mRulesLock) { 938 networkCostly = mMeteredIfaces.contains(iface); 939 uidRules = mUidRules.get(uid, RULE_ALLOW_ALL); 940 } 941 942 if (networkCostly && (uidRules & RULE_REJECT_METERED) != 0) { 943 return true; 944 } 945 946 // no restrictive rules; network is visible 947 return false; 948 } 949 950 /** 951 * Return a filtered {@link NetworkInfo}, potentially marked 952 * {@link DetailedState#BLOCKED} based on 953 * {@link #isNetworkWithLinkPropertiesBlocked}. 954 */ 955 private NetworkInfo getFilteredNetworkInfo(NetworkInfo info, LinkProperties lp, int uid) { 956 if (info != null && isNetworkWithLinkPropertiesBlocked(lp, uid)) { 957 // network is blocked; clone and override state 958 info = new NetworkInfo(info); 959 info.setDetailedState(DetailedState.BLOCKED, null, null); 960 if (DBG) log("returning Blocked NetworkInfo"); 961 } 962 if (info != null && mLockdownTracker != null) { 963 info = mLockdownTracker.augmentNetworkInfo(info); 964 if (DBG) log("returning Locked NetworkInfo"); 965 } 966 return info; 967 } 968 969 /** 970 * Return NetworkInfo for the active (i.e., connected) network interface. 971 * It is assumed that at most one network is active at a time. If more 972 * than one is active, it is indeterminate which will be returned. 973 * @return the info for the active network, or {@code null} if none is 974 * active 975 */ 976 @Override 977 public NetworkInfo getActiveNetworkInfo() { 978 enforceAccessPermission(); 979 final int uid = Binder.getCallingUid(); 980 NetworkState state = getUnfilteredActiveNetworkState(uid); 981 return getFilteredNetworkInfo(state.networkInfo, state.linkProperties, uid); 982 } 983 984 /** 985 * Find the first Provisioning network. 986 * 987 * @return NetworkInfo or null if none. 988 */ 989 private NetworkInfo getProvisioningNetworkInfo() { 990 enforceAccessPermission(); 991 992 // Find the first Provisioning Network 993 NetworkInfo provNi = null; 994 for (NetworkInfo ni : getAllNetworkInfo()) { 995 if (ni.isConnectedToProvisioningNetwork()) { 996 provNi = ni; 997 break; 998 } 999 } 1000 if (DBG) log("getProvisioningNetworkInfo: X provNi=" + provNi); 1001 return provNi; 1002 } 1003 1004 /** 1005 * Find the first Provisioning network or the ActiveDefaultNetwork 1006 * if there is no Provisioning network 1007 * 1008 * @return NetworkInfo or null if none. 1009 */ 1010 @Override 1011 public NetworkInfo getProvisioningOrActiveNetworkInfo() { 1012 enforceAccessPermission(); 1013 1014 NetworkInfo provNi = getProvisioningNetworkInfo(); 1015 if (provNi == null) { 1016 provNi = getActiveNetworkInfo(); 1017 } 1018 if (DBG) log("getProvisioningOrActiveNetworkInfo: X provNi=" + provNi); 1019 return provNi; 1020 } 1021 1022 public NetworkInfo getActiveNetworkInfoUnfiltered() { 1023 enforceAccessPermission(); 1024 final int uid = Binder.getCallingUid(); 1025 NetworkState state = getUnfilteredActiveNetworkState(uid); 1026 return state.networkInfo; 1027 } 1028 1029 @Override 1030 public NetworkInfo getActiveNetworkInfoForUid(int uid) { 1031 enforceConnectivityInternalPermission(); 1032 NetworkState state = getUnfilteredActiveNetworkState(uid); 1033 return getFilteredNetworkInfo(state.networkInfo, state.linkProperties, uid); 1034 } 1035 1036 @Override 1037 public NetworkInfo getNetworkInfo(int networkType) { 1038 enforceAccessPermission(); 1039 final int uid = Binder.getCallingUid(); 1040 NetworkState state = getFilteredNetworkState(networkType, uid); 1041 return state.networkInfo; 1042 } 1043 1044 @Override 1045 public NetworkInfo getNetworkInfoForNetwork(Network network) { 1046 enforceAccessPermission(); 1047 final int uid = Binder.getCallingUid(); 1048 NetworkInfo info = null; 1049 NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); 1050 if (nai != null) { 1051 synchronized (nai) { 1052 info = new NetworkInfo(nai.networkInfo); 1053 info = getFilteredNetworkInfo(info, nai.linkProperties, uid); 1054 } 1055 } 1056 return info; 1057 } 1058 1059 @Override 1060 public NetworkInfo[] getAllNetworkInfo() { 1061 enforceAccessPermission(); 1062 final ArrayList<NetworkInfo> result = Lists.newArrayList(); 1063 for (int networkType = 0; networkType <= ConnectivityManager.MAX_NETWORK_TYPE; 1064 networkType++) { 1065 NetworkInfo info = getNetworkInfo(networkType); 1066 if (info != null) { 1067 result.add(info); 1068 } 1069 } 1070 return result.toArray(new NetworkInfo[result.size()]); 1071 } 1072 1073 @Override 1074 public Network getNetworkForType(int networkType) { 1075 enforceAccessPermission(); 1076 final int uid = Binder.getCallingUid(); 1077 NetworkState state = getFilteredNetworkState(networkType, uid); 1078 if (!isNetworkWithLinkPropertiesBlocked(state.linkProperties, uid)) { 1079 return state.network; 1080 } 1081 return null; 1082 } 1083 1084 @Override 1085 public Network[] getAllNetworks() { 1086 enforceAccessPermission(); 1087 final ArrayList<Network> result = new ArrayList(); 1088 synchronized (mNetworkForNetId) { 1089 for (int i = 0; i < mNetworkForNetId.size(); i++) { 1090 result.add(new Network(mNetworkForNetId.valueAt(i).network)); 1091 } 1092 } 1093 return result.toArray(new Network[result.size()]); 1094 } 1095 1096 private NetworkCapabilities getNetworkCapabilitiesAndValidation(NetworkAgentInfo nai) { 1097 if (nai != null) { 1098 synchronized (nai) { 1099 if (nai.created) { 1100 NetworkCapabilities nc = new NetworkCapabilities(nai.networkCapabilities); 1101 if (nai.validated) { 1102 nc.addCapability(NetworkCapabilities.NET_CAPABILITY_VALIDATED); 1103 } else { 1104 nc.removeCapability(NetworkCapabilities.NET_CAPABILITY_VALIDATED); 1105 } 1106 return nc; 1107 } 1108 } 1109 } 1110 return null; 1111 } 1112 1113 @Override 1114 public NetworkCapabilities[] getDefaultNetworkCapabilitiesForUser(int userId) { 1115 // The basic principle is: if an app's traffic could possibly go over a 1116 // network, without the app doing anything multinetwork-specific, 1117 // (hence, by "default"), then include that network's capabilities in 1118 // the array. 1119 // 1120 // In the normal case, app traffic only goes over the system's default 1121 // network connection, so that's the only network returned. 1122 // 1123 // With a VPN in force, some app traffic may go into the VPN, and thus 1124 // over whatever underlying networks the VPN specifies, while other app 1125 // traffic may go over the system default network (e.g.: a split-tunnel 1126 // VPN, or an app disallowed by the VPN), so the set of networks 1127 // returned includes the VPN's underlying networks and the system 1128 // default. 1129 enforceAccessPermission(); 1130 1131 HashMap<Network, NetworkCapabilities> result = new HashMap<Network, NetworkCapabilities>(); 1132 1133 NetworkAgentInfo nai = getDefaultNetwork(); 1134 NetworkCapabilities nc = getNetworkCapabilitiesAndValidation(getDefaultNetwork()); 1135 if (nc != null) { 1136 result.put(nai.network, nc); 1137 } 1138 1139 if (!mLockdownEnabled) { 1140 synchronized (mVpns) { 1141 Vpn vpn = mVpns.get(userId); 1142 if (vpn != null) { 1143 Network[] networks = vpn.getUnderlyingNetworks(); 1144 if (networks != null) { 1145 for (Network network : networks) { 1146 nai = getNetworkAgentInfoForNetwork(network); 1147 nc = getNetworkCapabilitiesAndValidation(nai); 1148 if (nc != null) { 1149 result.put(nai.network, nc); 1150 } 1151 } 1152 } 1153 } 1154 } 1155 } 1156 1157 NetworkCapabilities[] out = new NetworkCapabilities[result.size()]; 1158 out = result.values().toArray(out); 1159 return out; 1160 } 1161 1162 @Override 1163 public boolean isNetworkSupported(int networkType) { 1164 enforceAccessPermission(); 1165 return mLegacyTypeTracker.isTypeSupported(networkType); 1166 } 1167 1168 /** 1169 * Return LinkProperties for the active (i.e., connected) default 1170 * network interface. It is assumed that at most one default network 1171 * is active at a time. If more than one is active, it is indeterminate 1172 * which will be returned. 1173 * @return the ip properties for the active network, or {@code null} if 1174 * none is active 1175 */ 1176 @Override 1177 public LinkProperties getActiveLinkProperties() { 1178 enforceAccessPermission(); 1179 final int uid = Binder.getCallingUid(); 1180 NetworkState state = getUnfilteredActiveNetworkState(uid); 1181 return state.linkProperties; 1182 } 1183 1184 @Override 1185 public LinkProperties getLinkPropertiesForType(int networkType) { 1186 enforceAccessPermission(); 1187 NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType); 1188 if (nai != null) { 1189 synchronized (nai) { 1190 return new LinkProperties(nai.linkProperties); 1191 } 1192 } 1193 return null; 1194 } 1195 1196 // TODO - this should be ALL networks 1197 @Override 1198 public LinkProperties getLinkProperties(Network network) { 1199 enforceAccessPermission(); 1200 NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); 1201 if (nai != null) { 1202 synchronized (nai) { 1203 return new LinkProperties(nai.linkProperties); 1204 } 1205 } 1206 return null; 1207 } 1208 1209 @Override 1210 public NetworkCapabilities getNetworkCapabilities(Network network) { 1211 enforceAccessPermission(); 1212 NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); 1213 if (nai != null) { 1214 synchronized (nai) { 1215 return new NetworkCapabilities(nai.networkCapabilities); 1216 } 1217 } 1218 return null; 1219 } 1220 1221 @Override 1222 public NetworkState[] getAllNetworkState() { 1223 enforceAccessPermission(); 1224 final int uid = Binder.getCallingUid(); 1225 final ArrayList<NetworkState> result = Lists.newArrayList(); 1226 for (int networkType = 0; networkType <= ConnectivityManager.MAX_NETWORK_TYPE; 1227 networkType++) { 1228 NetworkState state = getFilteredNetworkState(networkType, uid); 1229 if (state.networkInfo != null) { 1230 result.add(state); 1231 } 1232 } 1233 return result.toArray(new NetworkState[result.size()]); 1234 } 1235 1236 @Override 1237 public NetworkQuotaInfo getActiveNetworkQuotaInfo() { 1238 enforceAccessPermission(); 1239 final int uid = Binder.getCallingUid(); 1240 final long token = Binder.clearCallingIdentity(); 1241 try { 1242 final NetworkState state = getUnfilteredActiveNetworkState(uid); 1243 if (state.networkInfo != null) { 1244 try { 1245 return mPolicyManager.getNetworkQuotaInfo(state); 1246 } catch (RemoteException e) { 1247 } 1248 } 1249 return null; 1250 } finally { 1251 Binder.restoreCallingIdentity(token); 1252 } 1253 } 1254 1255 @Override 1256 public boolean isActiveNetworkMetered() { 1257 enforceAccessPermission(); 1258 final int uid = Binder.getCallingUid(); 1259 final long token = Binder.clearCallingIdentity(); 1260 try { 1261 return isActiveNetworkMeteredUnchecked(uid); 1262 } finally { 1263 Binder.restoreCallingIdentity(token); 1264 } 1265 } 1266 1267 private boolean isActiveNetworkMeteredUnchecked(int uid) { 1268 final NetworkState state = getUnfilteredActiveNetworkState(uid); 1269 if (state.networkInfo != null) { 1270 try { 1271 return mPolicyManager.isNetworkMetered(state); 1272 } catch (RemoteException e) { 1273 } 1274 } 1275 return false; 1276 } 1277 1278 private INetworkManagementEventObserver mDataActivityObserver = new BaseNetworkObserver() { 1279 @Override 1280 public void interfaceClassDataActivityChanged(String label, boolean active, long tsNanos) { 1281 int deviceType = Integer.parseInt(label); 1282 sendDataActivityBroadcast(deviceType, active, tsNanos); 1283 } 1284 }; 1285 1286 /** 1287 * Ensure that a network route exists to deliver traffic to the specified 1288 * host via the specified network interface. 1289 * @param networkType the type of the network over which traffic to the 1290 * specified host is to be routed 1291 * @param hostAddress the IP address of the host to which the route is 1292 * desired 1293 * @return {@code true} on success, {@code false} on failure 1294 */ 1295 public boolean requestRouteToHostAddress(int networkType, byte[] hostAddress) { 1296 enforceChangePermission(); 1297 if (mProtectedNetworks.contains(networkType)) { 1298 enforceConnectivityInternalPermission(); 1299 } 1300 1301 InetAddress addr; 1302 try { 1303 addr = InetAddress.getByAddress(hostAddress); 1304 } catch (UnknownHostException e) { 1305 if (DBG) log("requestRouteToHostAddress got " + e.toString()); 1306 return false; 1307 } 1308 1309 if (!ConnectivityManager.isNetworkTypeValid(networkType)) { 1310 if (DBG) log("requestRouteToHostAddress on invalid network: " + networkType); 1311 return false; 1312 } 1313 1314 NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType); 1315 if (nai == null) { 1316 if (mLegacyTypeTracker.isTypeSupported(networkType) == false) { 1317 if (DBG) log("requestRouteToHostAddress on unsupported network: " + networkType); 1318 } else { 1319 if (DBG) log("requestRouteToHostAddress on down network: " + networkType); 1320 } 1321 return false; 1322 } 1323 1324 DetailedState netState; 1325 synchronized (nai) { 1326 netState = nai.networkInfo.getDetailedState(); 1327 } 1328 1329 if (netState != DetailedState.CONNECTED && netState != DetailedState.CAPTIVE_PORTAL_CHECK) { 1330 if (VDBG) { 1331 log("requestRouteToHostAddress on down network " 1332 + "(" + networkType + ") - dropped" 1333 + " netState=" + netState); 1334 } 1335 return false; 1336 } 1337 1338 final int uid = Binder.getCallingUid(); 1339 final long token = Binder.clearCallingIdentity(); 1340 try { 1341 LinkProperties lp; 1342 int netId; 1343 synchronized (nai) { 1344 lp = nai.linkProperties; 1345 netId = nai.network.netId; 1346 } 1347 boolean ok = addLegacyRouteToHost(lp, addr, netId, uid); 1348 if (DBG) log("requestRouteToHostAddress ok=" + ok); 1349 return ok; 1350 } finally { 1351 Binder.restoreCallingIdentity(token); 1352 } 1353 } 1354 1355 private boolean addLegacyRouteToHost(LinkProperties lp, InetAddress addr, int netId, int uid) { 1356 RouteInfo bestRoute = RouteInfo.selectBestRoute(lp.getAllRoutes(), addr); 1357 if (bestRoute == null) { 1358 bestRoute = RouteInfo.makeHostRoute(addr, lp.getInterfaceName()); 1359 } else { 1360 String iface = bestRoute.getInterface(); 1361 if (bestRoute.getGateway().equals(addr)) { 1362 // if there is no better route, add the implied hostroute for our gateway 1363 bestRoute = RouteInfo.makeHostRoute(addr, iface); 1364 } else { 1365 // if we will connect to this through another route, add a direct route 1366 // to it's gateway 1367 bestRoute = RouteInfo.makeHostRoute(addr, bestRoute.getGateway(), iface); 1368 } 1369 } 1370 if (DBG) log("Adding " + bestRoute + " for interface " + bestRoute.getInterface()); 1371 try { 1372 mNetd.addLegacyRouteForNetId(netId, bestRoute, uid); 1373 } catch (Exception e) { 1374 // never crash - catch them all 1375 if (DBG) loge("Exception trying to add a route: " + e); 1376 return false; 1377 } 1378 return true; 1379 } 1380 1381 public void setDataDependency(int networkType, boolean met) { 1382 enforceConnectivityInternalPermission(); 1383 1384 mHandler.sendMessage(mHandler.obtainMessage(EVENT_SET_DEPENDENCY_MET, 1385 (met ? ENABLED : DISABLED), networkType)); 1386 } 1387 1388 private void handleSetDependencyMet(int networkType, boolean met) { 1389 if (mNetTrackers[networkType] != null) { 1390 if (DBG) { 1391 log("handleSetDependencyMet(" + networkType + ", " + met + ")"); 1392 } 1393 mNetTrackers[networkType].setDependencyMet(met); 1394 } 1395 } 1396 1397 private INetworkPolicyListener mPolicyListener = new INetworkPolicyListener.Stub() { 1398 @Override 1399 public void onUidRulesChanged(int uid, int uidRules) { 1400 // caller is NPMS, since we only register with them 1401 if (LOGD_RULES) { 1402 log("onUidRulesChanged(uid=" + uid + ", uidRules=" + uidRules + ")"); 1403 } 1404 1405 synchronized (mRulesLock) { 1406 // skip update when we've already applied rules 1407 final int oldRules = mUidRules.get(uid, RULE_ALLOW_ALL); 1408 if (oldRules == uidRules) return; 1409 1410 mUidRules.put(uid, uidRules); 1411 } 1412 1413 // TODO: notify UID when it has requested targeted updates 1414 } 1415 1416 @Override 1417 public void onMeteredIfacesChanged(String[] meteredIfaces) { 1418 // caller is NPMS, since we only register with them 1419 if (LOGD_RULES) { 1420 log("onMeteredIfacesChanged(ifaces=" + Arrays.toString(meteredIfaces) + ")"); 1421 } 1422 1423 synchronized (mRulesLock) { 1424 mMeteredIfaces.clear(); 1425 for (String iface : meteredIfaces) { 1426 mMeteredIfaces.add(iface); 1427 } 1428 } 1429 } 1430 1431 @Override 1432 public void onRestrictBackgroundChanged(boolean restrictBackground) { 1433 // caller is NPMS, since we only register with them 1434 if (LOGD_RULES) { 1435 log("onRestrictBackgroundChanged(restrictBackground=" + restrictBackground + ")"); 1436 } 1437 1438 // kick off connectivity change broadcast for active network, since 1439 // global background policy change is radical. 1440 // TODO: Dead code; remove. 1441 // 1442 // final int networkType = mActiveDefaultNetwork; 1443 // if (isNetworkTypeValid(networkType)) { 1444 // final NetworkStateTracker tracker = mNetTrackers[networkType]; 1445 // if (tracker != null) { 1446 // final NetworkInfo info = tracker.getNetworkInfo(); 1447 // if (info != null && info.isConnected()) { 1448 // sendConnectedBroadcast(info); 1449 // } 1450 // } 1451 // } 1452 } 1453 }; 1454 1455 @Override 1456 public void setPolicyDataEnable(int networkType, boolean enabled) { 1457 // only someone like NPMS should only be calling us 1458 mContext.enforceCallingOrSelfPermission(MANAGE_NETWORK_POLICY, TAG); 1459 1460 mHandler.sendMessage(mHandler.obtainMessage( 1461 EVENT_SET_POLICY_DATA_ENABLE, networkType, (enabled ? ENABLED : DISABLED))); 1462 } 1463 1464 private void handleSetPolicyDataEnable(int networkType, boolean enabled) { 1465 // TODO - handle this passing to factories 1466// if (isNetworkTypeValid(networkType)) { 1467// final NetworkStateTracker tracker = mNetTrackers[networkType]; 1468// if (tracker != null) { 1469// tracker.setPolicyDataEnable(enabled); 1470// } 1471// } 1472 } 1473 1474 private void enforceInternetPermission() { 1475 mContext.enforceCallingOrSelfPermission( 1476 android.Manifest.permission.INTERNET, 1477 "ConnectivityService"); 1478 } 1479 1480 private void enforceAccessPermission() { 1481 mContext.enforceCallingOrSelfPermission( 1482 android.Manifest.permission.ACCESS_NETWORK_STATE, 1483 "ConnectivityService"); 1484 } 1485 1486 private void enforceChangePermission() { 1487 mContext.enforceCallingOrSelfPermission( 1488 android.Manifest.permission.CHANGE_NETWORK_STATE, 1489 "ConnectivityService"); 1490 } 1491 1492 private void enforceTetherAccessPermission() { 1493 mContext.enforceCallingOrSelfPermission( 1494 android.Manifest.permission.ACCESS_NETWORK_STATE, 1495 "ConnectivityService"); 1496 } 1497 1498 private void enforceConnectivityInternalPermission() { 1499 mContext.enforceCallingOrSelfPermission( 1500 android.Manifest.permission.CONNECTIVITY_INTERNAL, 1501 "ConnectivityService"); 1502 } 1503 1504 public void sendConnectedBroadcast(NetworkInfo info) { 1505 enforceConnectivityInternalPermission(); 1506 sendGeneralBroadcast(info, CONNECTIVITY_ACTION_IMMEDIATE); 1507 sendGeneralBroadcast(info, CONNECTIVITY_ACTION); 1508 } 1509 1510 private void sendConnectedBroadcastDelayed(NetworkInfo info, int delayMs) { 1511 sendGeneralBroadcast(info, CONNECTIVITY_ACTION_IMMEDIATE); 1512 sendGeneralBroadcastDelayed(info, CONNECTIVITY_ACTION, delayMs); 1513 } 1514 1515 private void sendInetConditionBroadcast(NetworkInfo info) { 1516 sendGeneralBroadcast(info, ConnectivityManager.INET_CONDITION_ACTION); 1517 } 1518 1519 private Intent makeGeneralIntent(NetworkInfo info, String bcastType) { 1520 if (mLockdownTracker != null) { 1521 info = mLockdownTracker.augmentNetworkInfo(info); 1522 } 1523 1524 Intent intent = new Intent(bcastType); 1525 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_INFO, new NetworkInfo(info)); 1526 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_TYPE, info.getType()); 1527 if (info.isFailover()) { 1528 intent.putExtra(ConnectivityManager.EXTRA_IS_FAILOVER, true); 1529 info.setFailover(false); 1530 } 1531 if (info.getReason() != null) { 1532 intent.putExtra(ConnectivityManager.EXTRA_REASON, info.getReason()); 1533 } 1534 if (info.getExtraInfo() != null) { 1535 intent.putExtra(ConnectivityManager.EXTRA_EXTRA_INFO, 1536 info.getExtraInfo()); 1537 } 1538 intent.putExtra(ConnectivityManager.EXTRA_INET_CONDITION, mDefaultInetConditionPublished); 1539 return intent; 1540 } 1541 1542 private void sendGeneralBroadcast(NetworkInfo info, String bcastType) { 1543 sendStickyBroadcast(makeGeneralIntent(info, bcastType)); 1544 } 1545 1546 private void sendGeneralBroadcastDelayed(NetworkInfo info, String bcastType, int delayMs) { 1547 sendStickyBroadcastDelayed(makeGeneralIntent(info, bcastType), delayMs); 1548 } 1549 1550 private void sendDataActivityBroadcast(int deviceType, boolean active, long tsNanos) { 1551 Intent intent = new Intent(ConnectivityManager.ACTION_DATA_ACTIVITY_CHANGE); 1552 intent.putExtra(ConnectivityManager.EXTRA_DEVICE_TYPE, deviceType); 1553 intent.putExtra(ConnectivityManager.EXTRA_IS_ACTIVE, active); 1554 intent.putExtra(ConnectivityManager.EXTRA_REALTIME_NS, tsNanos); 1555 final long ident = Binder.clearCallingIdentity(); 1556 try { 1557 mContext.sendOrderedBroadcastAsUser(intent, UserHandle.ALL, 1558 RECEIVE_DATA_ACTIVITY_CHANGE, null, null, 0, null, null); 1559 } finally { 1560 Binder.restoreCallingIdentity(ident); 1561 } 1562 } 1563 1564 private void sendStickyBroadcast(Intent intent) { 1565 synchronized(this) { 1566 if (!mSystemReady) { 1567 mInitialBroadcast = new Intent(intent); 1568 } 1569 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 1570 if (DBG) { 1571 log("sendStickyBroadcast: action=" + intent.getAction()); 1572 } 1573 1574 final long ident = Binder.clearCallingIdentity(); 1575 if (ConnectivityManager.CONNECTIVITY_ACTION.equals(intent.getAction())) { 1576 final IBatteryStats bs = BatteryStatsService.getService(); 1577 try { 1578 NetworkInfo ni = intent.getParcelableExtra( 1579 ConnectivityManager.EXTRA_NETWORK_INFO); 1580 bs.noteConnectivityChanged(intent.getIntExtra( 1581 ConnectivityManager.EXTRA_NETWORK_TYPE, ConnectivityManager.TYPE_NONE), 1582 ni != null ? ni.getState().toString() : "?"); 1583 } catch (RemoteException e) { 1584 } 1585 } 1586 try { 1587 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 1588 } finally { 1589 Binder.restoreCallingIdentity(ident); 1590 } 1591 } 1592 } 1593 1594 private void sendStickyBroadcastDelayed(Intent intent, int delayMs) { 1595 if (delayMs <= 0) { 1596 sendStickyBroadcast(intent); 1597 } else { 1598 if (VDBG) { 1599 log("sendStickyBroadcastDelayed: delayMs=" + delayMs + ", action=" 1600 + intent.getAction()); 1601 } 1602 mHandler.sendMessageDelayed(mHandler.obtainMessage( 1603 EVENT_SEND_STICKY_BROADCAST_INTENT, intent), delayMs); 1604 } 1605 } 1606 1607 void systemReady() { 1608 // start network sampling .. 1609 Intent intent = new Intent(ACTION_PKT_CNT_SAMPLE_INTERVAL_ELAPSED); 1610 intent.setPackage(mContext.getPackageName()); 1611 1612 mSampleIntervalElapsedIntent = PendingIntent.getBroadcast(mContext, 1613 SAMPLE_INTERVAL_ELAPSED_REQUEST_CODE, intent, 0); 1614 setAlarm(DEFAULT_START_SAMPLING_INTERVAL_IN_SECONDS * 1000, mSampleIntervalElapsedIntent); 1615 1616 loadGlobalProxy(); 1617 1618 synchronized(this) { 1619 mSystemReady = true; 1620 if (mInitialBroadcast != null) { 1621 mContext.sendStickyBroadcastAsUser(mInitialBroadcast, UserHandle.ALL); 1622 mInitialBroadcast = null; 1623 } 1624 } 1625 // load the global proxy at startup 1626 mHandler.sendMessage(mHandler.obtainMessage(EVENT_APPLY_GLOBAL_HTTP_PROXY)); 1627 1628 // Try bringing up tracker, but if KeyStore isn't ready yet, wait 1629 // for user to unlock device. 1630 if (!updateLockdownVpn()) { 1631 final IntentFilter filter = new IntentFilter(Intent.ACTION_USER_PRESENT); 1632 mContext.registerReceiver(mUserPresentReceiver, filter); 1633 } 1634 1635 mHandler.sendMessage(mHandler.obtainMessage(EVENT_SYSTEM_READY)); 1636 1637 mPermissionMonitor.startMonitoring(); 1638 } 1639 1640 private BroadcastReceiver mUserPresentReceiver = new BroadcastReceiver() { 1641 @Override 1642 public void onReceive(Context context, Intent intent) { 1643 // Try creating lockdown tracker, since user present usually means 1644 // unlocked keystore. 1645 if (updateLockdownVpn()) { 1646 mContext.unregisterReceiver(this); 1647 } 1648 } 1649 }; 1650 1651 /** @hide */ 1652 @Override 1653 public void captivePortalCheckCompleted(NetworkInfo info, boolean isCaptivePortal) { 1654 enforceConnectivityInternalPermission(); 1655 if (DBG) log("captivePortalCheckCompleted: ni=" + info + " captive=" + isCaptivePortal); 1656// mNetTrackers[info.getType()].captivePortalCheckCompleted(isCaptivePortal); 1657 } 1658 1659 /** 1660 * Setup data activity tracking for the given network. 1661 * 1662 * Every {@code setupDataActivityTracking} should be paired with a 1663 * {@link #removeDataActivityTracking} for cleanup. 1664 */ 1665 private void setupDataActivityTracking(NetworkAgentInfo networkAgent) { 1666 final String iface = networkAgent.linkProperties.getInterfaceName(); 1667 1668 final int timeout; 1669 int type = ConnectivityManager.TYPE_NONE; 1670 1671 if (networkAgent.networkCapabilities.hasTransport( 1672 NetworkCapabilities.TRANSPORT_CELLULAR)) { 1673 timeout = Settings.Global.getInt(mContext.getContentResolver(), 1674 Settings.Global.DATA_ACTIVITY_TIMEOUT_MOBILE, 1675 5); 1676 type = ConnectivityManager.TYPE_MOBILE; 1677 } else if (networkAgent.networkCapabilities.hasTransport( 1678 NetworkCapabilities.TRANSPORT_WIFI)) { 1679 timeout = Settings.Global.getInt(mContext.getContentResolver(), 1680 Settings.Global.DATA_ACTIVITY_TIMEOUT_WIFI, 1681 0); 1682 type = ConnectivityManager.TYPE_WIFI; 1683 } else { 1684 // do not track any other networks 1685 timeout = 0; 1686 } 1687 1688 if (timeout > 0 && iface != null && type != ConnectivityManager.TYPE_NONE) { 1689 try { 1690 mNetd.addIdleTimer(iface, timeout, type); 1691 } catch (Exception e) { 1692 // You shall not crash! 1693 loge("Exception in setupDataActivityTracking " + e); 1694 } 1695 } 1696 } 1697 1698 /** 1699 * Remove data activity tracking when network disconnects. 1700 */ 1701 private void removeDataActivityTracking(NetworkAgentInfo networkAgent) { 1702 final String iface = networkAgent.linkProperties.getInterfaceName(); 1703 final NetworkCapabilities caps = networkAgent.networkCapabilities; 1704 1705 if (iface != null && (caps.hasTransport(NetworkCapabilities.TRANSPORT_CELLULAR) || 1706 caps.hasTransport(NetworkCapabilities.TRANSPORT_WIFI))) { 1707 try { 1708 // the call fails silently if no idletimer setup for this interface 1709 mNetd.removeIdleTimer(iface); 1710 } catch (Exception e) { 1711 loge("Exception in removeDataActivityTracking " + e); 1712 } 1713 } 1714 } 1715 1716 /** 1717 * Reads the network specific MTU size from reources. 1718 * and set it on it's iface. 1719 */ 1720 private void updateMtu(LinkProperties newLp, LinkProperties oldLp) { 1721 final String iface = newLp.getInterfaceName(); 1722 final int mtu = newLp.getMtu(); 1723 if (oldLp != null && newLp.isIdenticalMtu(oldLp)) { 1724 if (VDBG) log("identical MTU - not setting"); 1725 return; 1726 } 1727 1728 if (LinkProperties.isValidMtu(mtu, newLp.hasGlobalIPv6Address()) == false) { 1729 loge("Unexpected mtu value: " + mtu + ", " + iface); 1730 return; 1731 } 1732 1733 // Cannot set MTU without interface name 1734 if (TextUtils.isEmpty(iface)) { 1735 loge("Setting MTU size with null iface."); 1736 return; 1737 } 1738 1739 try { 1740 if (DBG) log("Setting MTU size: " + iface + ", " + mtu); 1741 mNetd.setMtu(iface, mtu); 1742 } catch (Exception e) { 1743 Slog.e(TAG, "exception in setMtu()" + e); 1744 } 1745 } 1746 1747 private static final String DEFAULT_TCP_BUFFER_SIZES = "4096,87380,110208,4096,16384,110208"; 1748 1749 private void updateTcpBufferSizes(NetworkAgentInfo nai) { 1750 if (isDefaultNetwork(nai) == false) { 1751 return; 1752 } 1753 1754 String tcpBufferSizes = nai.linkProperties.getTcpBufferSizes(); 1755 String[] values = null; 1756 if (tcpBufferSizes != null) { 1757 values = tcpBufferSizes.split(","); 1758 } 1759 1760 if (values == null || values.length != 6) { 1761 if (DBG) log("Invalid tcpBufferSizes string: " + tcpBufferSizes +", using defaults"); 1762 tcpBufferSizes = DEFAULT_TCP_BUFFER_SIZES; 1763 values = tcpBufferSizes.split(","); 1764 } 1765 1766 if (tcpBufferSizes.equals(mCurrentTcpBufferSizes)) return; 1767 1768 try { 1769 if (DBG) Slog.d(TAG, "Setting tx/rx TCP buffers to " + tcpBufferSizes); 1770 1771 final String prefix = "/sys/kernel/ipv4/tcp_"; 1772 FileUtils.stringToFile(prefix + "rmem_min", values[0]); 1773 FileUtils.stringToFile(prefix + "rmem_def", values[1]); 1774 FileUtils.stringToFile(prefix + "rmem_max", values[2]); 1775 FileUtils.stringToFile(prefix + "wmem_min", values[3]); 1776 FileUtils.stringToFile(prefix + "wmem_def", values[4]); 1777 FileUtils.stringToFile(prefix + "wmem_max", values[5]); 1778 mCurrentTcpBufferSizes = tcpBufferSizes; 1779 } catch (IOException e) { 1780 loge("Can't set TCP buffer sizes:" + e); 1781 } 1782 1783 final String defaultRwndKey = "net.tcp.default_init_rwnd"; 1784 int defaultRwndValue = SystemProperties.getInt(defaultRwndKey, 0); 1785 Integer rwndValue = Settings.Global.getInt(mContext.getContentResolver(), 1786 Settings.Global.TCP_DEFAULT_INIT_RWND, defaultRwndValue); 1787 final String sysctlKey = "sys.sysctl.tcp_def_init_rwnd"; 1788 if (rwndValue != 0) { 1789 SystemProperties.set(sysctlKey, rwndValue.toString()); 1790 } 1791 } 1792 1793 private void flushVmDnsCache() { 1794 /* 1795 * Tell the VMs to toss their DNS caches 1796 */ 1797 Intent intent = new Intent(Intent.ACTION_CLEAR_DNS_CACHE); 1798 intent.addFlags(Intent.FLAG_RECEIVER_REPLACE_PENDING); 1799 /* 1800 * Connectivity events can happen before boot has completed ... 1801 */ 1802 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 1803 final long ident = Binder.clearCallingIdentity(); 1804 try { 1805 mContext.sendBroadcastAsUser(intent, UserHandle.ALL); 1806 } finally { 1807 Binder.restoreCallingIdentity(ident); 1808 } 1809 } 1810 1811 @Override 1812 public int getRestoreDefaultNetworkDelay(int networkType) { 1813 String restoreDefaultNetworkDelayStr = SystemProperties.get( 1814 NETWORK_RESTORE_DELAY_PROP_NAME); 1815 if(restoreDefaultNetworkDelayStr != null && 1816 restoreDefaultNetworkDelayStr.length() != 0) { 1817 try { 1818 return Integer.valueOf(restoreDefaultNetworkDelayStr); 1819 } catch (NumberFormatException e) { 1820 } 1821 } 1822 // if the system property isn't set, use the value for the apn type 1823 int ret = RESTORE_DEFAULT_NETWORK_DELAY; 1824 1825 if ((networkType <= ConnectivityManager.MAX_NETWORK_TYPE) && 1826 (mNetConfigs[networkType] != null)) { 1827 ret = mNetConfigs[networkType].restoreTime; 1828 } 1829 return ret; 1830 } 1831 1832 @Override 1833 protected void dump(FileDescriptor fd, PrintWriter writer, String[] args) { 1834 final IndentingPrintWriter pw = new IndentingPrintWriter(writer, " "); 1835 if (mContext.checkCallingOrSelfPermission( 1836 android.Manifest.permission.DUMP) 1837 != PackageManager.PERMISSION_GRANTED) { 1838 pw.println("Permission Denial: can't dump ConnectivityService " + 1839 "from from pid=" + Binder.getCallingPid() + ", uid=" + 1840 Binder.getCallingUid()); 1841 return; 1842 } 1843 1844 pw.println("NetworkFactories for:"); 1845 pw.increaseIndent(); 1846 for (NetworkFactoryInfo nfi : mNetworkFactoryInfos.values()) { 1847 pw.println(nfi.name); 1848 } 1849 pw.decreaseIndent(); 1850 pw.println(); 1851 1852 NetworkAgentInfo defaultNai = mNetworkForRequestId.get(mDefaultRequest.requestId); 1853 pw.print("Active default network: "); 1854 if (defaultNai == null) { 1855 pw.println("none"); 1856 } else { 1857 pw.println(defaultNai.network.netId); 1858 } 1859 pw.println(); 1860 1861 pw.println("Current Networks:"); 1862 pw.increaseIndent(); 1863 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 1864 pw.println(nai.toString()); 1865 pw.increaseIndent(); 1866 pw.println("Requests:"); 1867 pw.increaseIndent(); 1868 for (int i = 0; i < nai.networkRequests.size(); i++) { 1869 pw.println(nai.networkRequests.valueAt(i).toString()); 1870 } 1871 pw.decreaseIndent(); 1872 pw.println("Lingered:"); 1873 pw.increaseIndent(); 1874 for (NetworkRequest nr : nai.networkLingered) pw.println(nr.toString()); 1875 pw.decreaseIndent(); 1876 pw.decreaseIndent(); 1877 } 1878 pw.decreaseIndent(); 1879 pw.println(); 1880 1881 pw.println("Network Requests:"); 1882 pw.increaseIndent(); 1883 for (NetworkRequestInfo nri : mNetworkRequests.values()) { 1884 pw.println(nri.toString()); 1885 } 1886 pw.println(); 1887 pw.decreaseIndent(); 1888 1889 pw.println("mLegacyTypeTracker:"); 1890 pw.increaseIndent(); 1891 mLegacyTypeTracker.dump(pw); 1892 pw.decreaseIndent(); 1893 pw.println(); 1894 1895 synchronized (this) { 1896 pw.println("NetworkTransitionWakeLock is currently " + 1897 (mNetTransitionWakeLock.isHeld() ? "" : "not ") + "held."); 1898 pw.println("It was last requested for "+mNetTransitionWakeLockCausedBy); 1899 } 1900 pw.println(); 1901 1902 mTethering.dump(fd, pw, args); 1903 1904 if (mInetLog != null) { 1905 pw.println(); 1906 pw.println("Inet condition reports:"); 1907 pw.increaseIndent(); 1908 for(int i = 0; i < mInetLog.size(); i++) { 1909 pw.println(mInetLog.get(i)); 1910 } 1911 pw.decreaseIndent(); 1912 } 1913 } 1914 1915 private boolean isLiveNetworkAgent(NetworkAgentInfo nai, String msg) { 1916 if (nai.network == null) return false; 1917 final NetworkAgentInfo officialNai = getNetworkAgentInfoForNetwork(nai.network); 1918 if (officialNai != null && officialNai.equals(nai)) return true; 1919 if (officialNai != null || VDBG) { 1920 loge(msg + " - isLiveNetworkAgent found mismatched netId: " + officialNai + 1921 " - " + nai); 1922 } 1923 return false; 1924 } 1925 1926 private boolean isRequest(NetworkRequest request) { 1927 return mNetworkRequests.get(request).isRequest; 1928 } 1929 1930 // must be stateless - things change under us. 1931 private class NetworkStateTrackerHandler extends Handler { 1932 public NetworkStateTrackerHandler(Looper looper) { 1933 super(looper); 1934 } 1935 1936 @Override 1937 public void handleMessage(Message msg) { 1938 NetworkInfo info; 1939 switch (msg.what) { 1940 case AsyncChannel.CMD_CHANNEL_HALF_CONNECTED: { 1941 handleAsyncChannelHalfConnect(msg); 1942 break; 1943 } 1944 case AsyncChannel.CMD_CHANNEL_DISCONNECT: { 1945 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1946 if (nai != null) nai.asyncChannel.disconnect(); 1947 break; 1948 } 1949 case AsyncChannel.CMD_CHANNEL_DISCONNECTED: { 1950 handleAsyncChannelDisconnected(msg); 1951 break; 1952 } 1953 case NetworkAgent.EVENT_NETWORK_CAPABILITIES_CHANGED: { 1954 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1955 if (nai == null) { 1956 loge("EVENT_NETWORK_CAPABILITIES_CHANGED from unknown NetworkAgent"); 1957 } else { 1958 updateCapabilities(nai, (NetworkCapabilities)msg.obj); 1959 } 1960 break; 1961 } 1962 case NetworkAgent.EVENT_NETWORK_PROPERTIES_CHANGED: { 1963 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1964 if (nai == null) { 1965 loge("NetworkAgent not found for EVENT_NETWORK_PROPERTIES_CHANGED"); 1966 } else { 1967 if (VDBG) { 1968 log("Update of LinkProperties for " + nai.name() + 1969 "; created=" + nai.created); 1970 } 1971 LinkProperties oldLp = nai.linkProperties; 1972 synchronized (nai) { 1973 nai.linkProperties = (LinkProperties)msg.obj; 1974 } 1975 if (nai.created) updateLinkProperties(nai, oldLp); 1976 } 1977 break; 1978 } 1979 case NetworkAgent.EVENT_NETWORK_INFO_CHANGED: { 1980 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1981 if (nai == null) { 1982 loge("EVENT_NETWORK_INFO_CHANGED from unknown NetworkAgent"); 1983 break; 1984 } 1985 info = (NetworkInfo) msg.obj; 1986 updateNetworkInfo(nai, info); 1987 break; 1988 } 1989 case NetworkAgent.EVENT_NETWORK_SCORE_CHANGED: { 1990 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1991 if (nai == null) { 1992 loge("EVENT_NETWORK_SCORE_CHANGED from unknown NetworkAgent"); 1993 break; 1994 } 1995 Integer score = (Integer) msg.obj; 1996 if (score != null) updateNetworkScore(nai, score.intValue()); 1997 break; 1998 } 1999 case NetworkAgent.EVENT_UID_RANGES_ADDED: { 2000 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 2001 if (nai == null) { 2002 loge("EVENT_UID_RANGES_ADDED from unknown NetworkAgent"); 2003 break; 2004 } 2005 try { 2006 mNetd.addVpnUidRanges(nai.network.netId, (UidRange[])msg.obj); 2007 } catch (Exception e) { 2008 // Never crash! 2009 loge("Exception in addVpnUidRanges: " + e); 2010 } 2011 break; 2012 } 2013 case NetworkAgent.EVENT_UID_RANGES_REMOVED: { 2014 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 2015 if (nai == null) { 2016 loge("EVENT_UID_RANGES_REMOVED from unknown NetworkAgent"); 2017 break; 2018 } 2019 try { 2020 mNetd.removeVpnUidRanges(nai.network.netId, (UidRange[])msg.obj); 2021 } catch (Exception e) { 2022 // Never crash! 2023 loge("Exception in removeVpnUidRanges: " + e); 2024 } 2025 break; 2026 } 2027 case NetworkAgent.EVENT_SET_EXPLICITLY_SELECTED: { 2028 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 2029 if (nai == null) { 2030 loge("EVENT_SET_EXPLICITLY_SELECTED from unknown NetworkAgent"); 2031 break; 2032 } 2033 if (nai.created && !nai.networkMisc.explicitlySelected) { 2034 loge("ERROR: created network explicitly selected."); 2035 } 2036 nai.networkMisc.explicitlySelected = true; 2037 break; 2038 } 2039 case NetworkMonitor.EVENT_NETWORK_TESTED: { 2040 NetworkAgentInfo nai = (NetworkAgentInfo)msg.obj; 2041 if (isLiveNetworkAgent(nai, "EVENT_NETWORK_VALIDATED")) { 2042 boolean valid = (msg.arg1 == NetworkMonitor.NETWORK_TEST_RESULT_VALID); 2043 if (valid) { 2044 if (DBG) log("Validated " + nai.name()); 2045 if (!nai.validated) { 2046 nai.validated = true; 2047 rematchNetworkAndRequests(nai, NascentState.JUST_VALIDATED, 2048 ReapUnvalidatedNetworks.REAP); 2049 // If score has changed, rebroadcast to NetworkFactories. b/17726566 2050 sendUpdatedScoreToFactories(nai); 2051 } 2052 } 2053 updateInetCondition(nai, valid); 2054 // Let the NetworkAgent know the state of its network 2055 nai.asyncChannel.sendMessage( 2056 android.net.NetworkAgent.CMD_REPORT_NETWORK_STATUS, 2057 (valid ? NetworkAgent.VALID_NETWORK : NetworkAgent.INVALID_NETWORK), 2058 0, null); 2059 } 2060 break; 2061 } 2062 case NetworkMonitor.EVENT_NETWORK_LINGER_COMPLETE: { 2063 NetworkAgentInfo nai = (NetworkAgentInfo)msg.obj; 2064 if (isLiveNetworkAgent(nai, "EVENT_NETWORK_LINGER_COMPLETE")) { 2065 handleLingerComplete(nai); 2066 } 2067 break; 2068 } 2069 case NetworkMonitor.EVENT_PROVISIONING_NOTIFICATION: { 2070 if (msg.arg1 == 0) { 2071 setProvNotificationVisibleIntent(false, msg.arg2, 0, null, null); 2072 } else { 2073 NetworkAgentInfo nai = null; 2074 synchronized (mNetworkForNetId) { 2075 nai = mNetworkForNetId.get(msg.arg2); 2076 } 2077 if (nai == null) { 2078 loge("EVENT_PROVISIONING_NOTIFICATION from unknown NetworkMonitor"); 2079 break; 2080 } 2081 setProvNotificationVisibleIntent(true, msg.arg2, nai.networkInfo.getType(), 2082 nai.networkInfo.getExtraInfo(), (PendingIntent)msg.obj); 2083 } 2084 break; 2085 } 2086 case NetworkStateTracker.EVENT_STATE_CHANGED: { 2087 info = (NetworkInfo) msg.obj; 2088 NetworkInfo.State state = info.getState(); 2089 2090 if (VDBG || (state == NetworkInfo.State.CONNECTED) || 2091 (state == NetworkInfo.State.DISCONNECTED) || 2092 (state == NetworkInfo.State.SUSPENDED)) { 2093 log("ConnectivityChange for " + 2094 info.getTypeName() + ": " + 2095 state + "/" + info.getDetailedState()); 2096 } 2097 2098 EventLogTags.writeConnectivityStateChanged( 2099 info.getType(), info.getSubtype(), info.getDetailedState().ordinal()); 2100 2101 if (info.isConnectedToProvisioningNetwork()) { 2102 /** 2103 * TODO: Create ConnectivityManager.TYPE_MOBILE_PROVISIONING 2104 * for now its an in between network, its a network that 2105 * is actually a default network but we don't want it to be 2106 * announced as such to keep background applications from 2107 * trying to use it. It turns out that some still try so we 2108 * take the additional step of clearing any default routes 2109 * to the link that may have incorrectly setup by the lower 2110 * levels. 2111 */ 2112 LinkProperties lp = getLinkPropertiesForType(info.getType()); 2113 if (DBG) { 2114 log("EVENT_STATE_CHANGED: connected to provisioning network, lp=" + lp); 2115 } 2116 2117 // Clear any default routes setup by the radio so 2118 // any activity by applications trying to use this 2119 // connection will fail until the provisioning network 2120 // is enabled. 2121 /* 2122 for (RouteInfo r : lp.getRoutes()) { 2123 removeRoute(lp, r, TO_DEFAULT_TABLE, 2124 mNetTrackers[info.getType()].getNetwork().netId); 2125 } 2126 */ 2127 } else if (state == NetworkInfo.State.DISCONNECTED) { 2128 } else if (state == NetworkInfo.State.SUSPENDED) { 2129 } else if (state == NetworkInfo.State.CONNECTED) { 2130 // handleConnect(info); 2131 } 2132 notifyLockdownVpn(null); 2133 break; 2134 } 2135 case NetworkStateTracker.EVENT_CONFIGURATION_CHANGED: { 2136 info = (NetworkInfo) msg.obj; 2137 // TODO: Temporary allowing network configuration 2138 // change not resetting sockets. 2139 // @see bug/4455071 2140 /* 2141 handleConnectivityChange(info.getType(), mCurrentLinkProperties[info.getType()], 2142 false); 2143 */ 2144 break; 2145 } 2146 } 2147 } 2148 } 2149 2150 // Cancel any lingering so the linger timeout doesn't teardown a network. 2151 // This should be called when a network begins satisfying a NetworkRequest. 2152 // Note: depending on what state the NetworkMonitor is in (e.g., 2153 // if it's awaiting captive portal login, or if validation failed), this 2154 // may trigger a re-evaluation of the network. 2155 private void unlinger(NetworkAgentInfo nai) { 2156 if (VDBG) log("Canceling linger of " + nai.name()); 2157 nai.networkLingered.clear(); 2158 nai.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_CONNECTED); 2159 } 2160 2161 private void handleAsyncChannelHalfConnect(Message msg) { 2162 AsyncChannel ac = (AsyncChannel) msg.obj; 2163 if (mNetworkFactoryInfos.containsKey(msg.replyTo)) { 2164 if (msg.arg1 == AsyncChannel.STATUS_SUCCESSFUL) { 2165 if (VDBG) log("NetworkFactory connected"); 2166 // A network factory has connected. Send it all current NetworkRequests. 2167 for (NetworkRequestInfo nri : mNetworkRequests.values()) { 2168 if (nri.isRequest == false) continue; 2169 NetworkAgentInfo nai = mNetworkForRequestId.get(nri.request.requestId); 2170 ac.sendMessage(android.net.NetworkFactory.CMD_REQUEST_NETWORK, 2171 (nai != null ? nai.getCurrentScore() : 0), 0, nri.request); 2172 } 2173 } else { 2174 loge("Error connecting NetworkFactory"); 2175 mNetworkFactoryInfos.remove(msg.obj); 2176 } 2177 } else if (mNetworkAgentInfos.containsKey(msg.replyTo)) { 2178 if (msg.arg1 == AsyncChannel.STATUS_SUCCESSFUL) { 2179 if (VDBG) log("NetworkAgent connected"); 2180 // A network agent has requested a connection. Establish the connection. 2181 mNetworkAgentInfos.get(msg.replyTo).asyncChannel. 2182 sendMessage(AsyncChannel.CMD_CHANNEL_FULL_CONNECTION); 2183 } else { 2184 loge("Error connecting NetworkAgent"); 2185 NetworkAgentInfo nai = mNetworkAgentInfos.remove(msg.replyTo); 2186 if (nai != null) { 2187 synchronized (mNetworkForNetId) { 2188 mNetworkForNetId.remove(nai.network.netId); 2189 } 2190 // Just in case. 2191 mLegacyTypeTracker.remove(nai); 2192 } 2193 } 2194 } 2195 } 2196 2197 private void handleAsyncChannelDisconnected(Message msg) { 2198 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 2199 if (nai != null) { 2200 if (DBG) { 2201 log(nai.name() + " got DISCONNECTED, was satisfying " + nai.networkRequests.size()); 2202 } 2203 // A network agent has disconnected. 2204 if (nai.created) { 2205 // Tell netd to clean up the configuration for this network 2206 // (routing rules, DNS, etc). 2207 try { 2208 mNetd.removeNetwork(nai.network.netId); 2209 } catch (Exception e) { 2210 loge("Exception removing network: " + e); 2211 } 2212 } 2213 // TODO - if we move the logic to the network agent (have them disconnect 2214 // because they lost all their requests or because their score isn't good) 2215 // then they would disconnect organically, report their new state and then 2216 // disconnect the channel. 2217 if (nai.networkInfo.isConnected()) { 2218 nai.networkInfo.setDetailedState(NetworkInfo.DetailedState.DISCONNECTED, 2219 null, null); 2220 } 2221 if (isDefaultNetwork(nai)) { 2222 mDefaultInetConditionPublished = 0; 2223 } 2224 notifyNetworkCallbacks(nai, ConnectivityManager.CALLBACK_LOST); 2225 nai.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_DISCONNECTED); 2226 mNetworkAgentInfos.remove(msg.replyTo); 2227 updateClat(null, nai.linkProperties, nai); 2228 mLegacyTypeTracker.remove(nai); 2229 synchronized (mNetworkForNetId) { 2230 mNetworkForNetId.remove(nai.network.netId); 2231 } 2232 // Since we've lost the network, go through all the requests that 2233 // it was satisfying and see if any other factory can satisfy them. 2234 // TODO: This logic may be better replaced with a call to rematchAllNetworksAndRequests 2235 final ArrayList<NetworkAgentInfo> toActivate = new ArrayList<NetworkAgentInfo>(); 2236 for (int i = 0; i < nai.networkRequests.size(); i++) { 2237 NetworkRequest request = nai.networkRequests.valueAt(i); 2238 NetworkAgentInfo currentNetwork = mNetworkForRequestId.get(request.requestId); 2239 if (currentNetwork != null && currentNetwork.network.netId == nai.network.netId) { 2240 if (DBG) { 2241 log("Checking for replacement network to handle request " + request ); 2242 } 2243 mNetworkForRequestId.remove(request.requestId); 2244 sendUpdatedScoreToFactories(request, 0); 2245 NetworkAgentInfo alternative = null; 2246 for (NetworkAgentInfo existing : mNetworkAgentInfos.values()) { 2247 if (existing.satisfies(request) && 2248 (alternative == null || 2249 alternative.getCurrentScore() < existing.getCurrentScore())) { 2250 alternative = existing; 2251 } 2252 } 2253 if (alternative != null) { 2254 if (DBG) log(" found replacement in " + alternative.name()); 2255 if (!toActivate.contains(alternative)) { 2256 toActivate.add(alternative); 2257 } 2258 } 2259 } 2260 } 2261 if (nai.networkRequests.get(mDefaultRequest.requestId) != null) { 2262 removeDataActivityTracking(nai); 2263 notifyLockdownVpn(nai); 2264 requestNetworkTransitionWakelock(nai.name()); 2265 } 2266 for (NetworkAgentInfo networkToActivate : toActivate) { 2267 unlinger(networkToActivate); 2268 rematchNetworkAndRequests(networkToActivate, NascentState.NOT_JUST_VALIDATED, 2269 ReapUnvalidatedNetworks.DONT_REAP); 2270 } 2271 } 2272 } 2273 2274 // If this method proves to be too slow then we can maintain a separate 2275 // pendingIntent => NetworkRequestInfo map. 2276 // This method assumes that every non-null PendingIntent maps to exactly 1 NetworkRequestInfo. 2277 private NetworkRequestInfo findExistingNetworkRequestInfo(PendingIntent pendingIntent) { 2278 Intent intent = pendingIntent.getIntent(); 2279 for (Map.Entry<NetworkRequest, NetworkRequestInfo> entry : mNetworkRequests.entrySet()) { 2280 PendingIntent existingPendingIntent = entry.getValue().mPendingIntent; 2281 if (existingPendingIntent != null && 2282 existingPendingIntent.getIntent().filterEquals(intent)) { 2283 return entry.getValue(); 2284 } 2285 } 2286 return null; 2287 } 2288 2289 private void handleRegisterNetworkRequestWithIntent(Message msg) { 2290 final NetworkRequestInfo nri = (NetworkRequestInfo) (msg.obj); 2291 2292 NetworkRequestInfo existingRequest = findExistingNetworkRequestInfo(nri.mPendingIntent); 2293 if (existingRequest != null) { // remove the existing request. 2294 if (DBG) log("Replacing " + existingRequest.request + " with " 2295 + nri.request + " because their intents matched."); 2296 handleReleaseNetworkRequest(existingRequest.request, getCallingUid()); 2297 } 2298 handleRegisterNetworkRequest(msg); 2299 } 2300 2301 private void handleRegisterNetworkRequest(Message msg) { 2302 final NetworkRequestInfo nri = (NetworkRequestInfo) (msg.obj); 2303 2304 mNetworkRequests.put(nri.request, nri); 2305 2306 // TODO: This logic may be better replaced with a call to rematchNetworkAndRequests 2307 2308 // Check for the best currently alive network that satisfies this request 2309 NetworkAgentInfo bestNetwork = null; 2310 for (NetworkAgentInfo network : mNetworkAgentInfos.values()) { 2311 if (DBG) log("handleRegisterNetworkRequest checking " + network.name()); 2312 if (network.satisfies(nri.request)) { 2313 if (DBG) log("apparently satisfied. currentScore=" + network.getCurrentScore()); 2314 if (!nri.isRequest) { 2315 // Not setting bestNetwork here as a listening NetworkRequest may be 2316 // satisfied by multiple Networks. Instead the request is added to 2317 // each satisfying Network and notified about each. 2318 network.addRequest(nri.request); 2319 notifyNetworkCallback(network, nri); 2320 } else if (bestNetwork == null || 2321 bestNetwork.getCurrentScore() < network.getCurrentScore()) { 2322 bestNetwork = network; 2323 } 2324 } 2325 } 2326 if (bestNetwork != null) { 2327 if (DBG) log("using " + bestNetwork.name()); 2328 unlinger(bestNetwork); 2329 bestNetwork.addRequest(nri.request); 2330 mNetworkForRequestId.put(nri.request.requestId, bestNetwork); 2331 notifyNetworkCallback(bestNetwork, nri); 2332 if (nri.request.legacyType != TYPE_NONE) { 2333 mLegacyTypeTracker.add(nri.request.legacyType, bestNetwork); 2334 } 2335 } 2336 2337 if (nri.isRequest) { 2338 if (DBG) log("sending new NetworkRequest to factories"); 2339 final int score = bestNetwork == null ? 0 : bestNetwork.getCurrentScore(); 2340 for (NetworkFactoryInfo nfi : mNetworkFactoryInfos.values()) { 2341 nfi.asyncChannel.sendMessage(android.net.NetworkFactory.CMD_REQUEST_NETWORK, score, 2342 0, nri.request); 2343 } 2344 } 2345 } 2346 2347 private void handleReleaseNetworkRequestWithIntent(PendingIntent pendingIntent, 2348 int callingUid) { 2349 NetworkRequestInfo nri = findExistingNetworkRequestInfo(pendingIntent); 2350 if (nri != null) { 2351 handleReleaseNetworkRequest(nri.request, callingUid); 2352 } 2353 } 2354 2355 private void handleReleaseNetworkRequest(NetworkRequest request, int callingUid) { 2356 NetworkRequestInfo nri = mNetworkRequests.get(request); 2357 if (nri != null) { 2358 if (Process.SYSTEM_UID != callingUid && nri.mUid != callingUid) { 2359 if (DBG) log("Attempt to release unowned NetworkRequest " + request); 2360 return; 2361 } 2362 if (DBG) log("releasing NetworkRequest " + request); 2363 nri.unlinkDeathRecipient(); 2364 mNetworkRequests.remove(request); 2365 if (nri.isRequest) { 2366 // Find all networks that are satisfying this request and remove the request 2367 // from their request lists. 2368 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 2369 if (nai.networkRequests.get(nri.request.requestId) != null) { 2370 nai.networkRequests.remove(nri.request.requestId); 2371 if (DBG) { 2372 log(" Removing from current network " + nai.name() + 2373 ", leaving " + nai.networkRequests.size() + 2374 " requests."); 2375 } 2376 // check if has any requests remaining and if not, 2377 // disconnect (unless it's a VPN). 2378 boolean keep = nai.isVPN(); 2379 for (int i = 0; i < nai.networkRequests.size() && !keep; i++) { 2380 NetworkRequest r = nai.networkRequests.valueAt(i); 2381 if (isRequest(r)) keep = true; 2382 } 2383 if (!keep) { 2384 if (DBG) log("no live requests for " + nai.name() + "; disconnecting"); 2385 nai.asyncChannel.disconnect(); 2386 } 2387 } 2388 } 2389 2390 // Maintain the illusion. When this request arrived, we might have pretended 2391 // that a network connected to serve it, even though the network was already 2392 // connected. Now that this request has gone away, we might have to pretend 2393 // that the network disconnected. LegacyTypeTracker will generate that 2394 // phantom disconnect for this type. 2395 NetworkAgentInfo nai = mNetworkForRequestId.get(nri.request.requestId); 2396 if (nai != null) { 2397 mNetworkForRequestId.remove(nri.request.requestId); 2398 if (nri.request.legacyType != TYPE_NONE) { 2399 mLegacyTypeTracker.remove(nri.request.legacyType, nai); 2400 } 2401 } 2402 2403 for (NetworkFactoryInfo nfi : mNetworkFactoryInfos.values()) { 2404 nfi.asyncChannel.sendMessage(android.net.NetworkFactory.CMD_CANCEL_REQUEST, 2405 nri.request); 2406 } 2407 } else { 2408 // listens don't have a singular affectedNetwork. Check all networks to see 2409 // if this listen request applies and remove it. 2410 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 2411 nai.networkRequests.remove(nri.request.requestId); 2412 } 2413 } 2414 callCallbackForRequest(nri, null, ConnectivityManager.CALLBACK_RELEASED); 2415 } 2416 } 2417 2418 private class InternalHandler extends Handler { 2419 public InternalHandler(Looper looper) { 2420 super(looper); 2421 } 2422 2423 @Override 2424 public void handleMessage(Message msg) { 2425 switch (msg.what) { 2426 case EVENT_EXPIRE_NET_TRANSITION_WAKELOCK: 2427 case EVENT_CLEAR_NET_TRANSITION_WAKELOCK: { 2428 String causedBy = null; 2429 synchronized (ConnectivityService.this) { 2430 if (msg.arg1 == mNetTransitionWakeLockSerialNumber && 2431 mNetTransitionWakeLock.isHeld()) { 2432 mNetTransitionWakeLock.release(); 2433 causedBy = mNetTransitionWakeLockCausedBy; 2434 } else { 2435 break; 2436 } 2437 } 2438 if (msg.what == EVENT_EXPIRE_NET_TRANSITION_WAKELOCK) { 2439 log("Failed to find a new network - expiring NetTransition Wakelock"); 2440 } else { 2441 log("NetTransition Wakelock (" + (causedBy == null ? "unknown" : causedBy) + 2442 " cleared because we found a replacement network"); 2443 } 2444 break; 2445 } 2446 case EVENT_APPLY_GLOBAL_HTTP_PROXY: { 2447 handleDeprecatedGlobalHttpProxy(); 2448 break; 2449 } 2450 case EVENT_SET_DEPENDENCY_MET: { 2451 boolean met = (msg.arg1 == ENABLED); 2452 handleSetDependencyMet(msg.arg2, met); 2453 break; 2454 } 2455 case EVENT_SEND_STICKY_BROADCAST_INTENT: { 2456 Intent intent = (Intent)msg.obj; 2457 sendStickyBroadcast(intent); 2458 break; 2459 } 2460 case EVENT_SET_POLICY_DATA_ENABLE: { 2461 final int networkType = msg.arg1; 2462 final boolean enabled = msg.arg2 == ENABLED; 2463 handleSetPolicyDataEnable(networkType, enabled); 2464 break; 2465 } 2466 case EVENT_ENABLE_FAIL_FAST_MOBILE_DATA: { 2467 int tag = mEnableFailFastMobileDataTag.get(); 2468 if (msg.arg1 == tag) { 2469 MobileDataStateTracker mobileDst = 2470 (MobileDataStateTracker) mNetTrackers[ConnectivityManager.TYPE_MOBILE]; 2471 if (mobileDst != null) { 2472 mobileDst.setEnableFailFastMobileData(msg.arg2); 2473 } 2474 } else { 2475 log("EVENT_ENABLE_FAIL_FAST_MOBILE_DATA: stale arg1:" + msg.arg1 2476 + " != tag:" + tag); 2477 } 2478 break; 2479 } 2480 case EVENT_SAMPLE_INTERVAL_ELAPSED: { 2481 handleNetworkSamplingTimeout(); 2482 break; 2483 } 2484 case EVENT_PROXY_HAS_CHANGED: { 2485 handleApplyDefaultProxy((ProxyInfo)msg.obj); 2486 break; 2487 } 2488 case EVENT_REGISTER_NETWORK_FACTORY: { 2489 handleRegisterNetworkFactory((NetworkFactoryInfo)msg.obj); 2490 break; 2491 } 2492 case EVENT_UNREGISTER_NETWORK_FACTORY: { 2493 handleUnregisterNetworkFactory((Messenger)msg.obj); 2494 break; 2495 } 2496 case EVENT_REGISTER_NETWORK_AGENT: { 2497 handleRegisterNetworkAgent((NetworkAgentInfo)msg.obj); 2498 break; 2499 } 2500 case EVENT_REGISTER_NETWORK_REQUEST: 2501 case EVENT_REGISTER_NETWORK_LISTENER: { 2502 handleRegisterNetworkRequest(msg); 2503 break; 2504 } 2505 case EVENT_REGISTER_NETWORK_REQUEST_WITH_INTENT: { 2506 handleRegisterNetworkRequestWithIntent(msg); 2507 break; 2508 } 2509 case EVENT_RELEASE_NETWORK_REQUEST_WITH_INTENT: { 2510 handleReleaseNetworkRequestWithIntent((PendingIntent) msg.obj, msg.arg1); 2511 break; 2512 } 2513 case EVENT_RELEASE_NETWORK_REQUEST: { 2514 handleReleaseNetworkRequest((NetworkRequest) msg.obj, msg.arg1); 2515 break; 2516 } 2517 case EVENT_SYSTEM_READY: { 2518 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 2519 nai.networkMonitor.systemReady = true; 2520 } 2521 break; 2522 } 2523 } 2524 } 2525 } 2526 2527 // javadoc from interface 2528 public int tether(String iface) { 2529 ConnectivityManager.enforceTetherChangePermission(mContext); 2530 if (isTetheringSupported()) { 2531 return mTethering.tether(iface); 2532 } else { 2533 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 2534 } 2535 } 2536 2537 // javadoc from interface 2538 public int untether(String iface) { 2539 ConnectivityManager.enforceTetherChangePermission(mContext); 2540 2541 if (isTetheringSupported()) { 2542 return mTethering.untether(iface); 2543 } else { 2544 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 2545 } 2546 } 2547 2548 // javadoc from interface 2549 public int getLastTetherError(String iface) { 2550 enforceTetherAccessPermission(); 2551 2552 if (isTetheringSupported()) { 2553 return mTethering.getLastTetherError(iface); 2554 } else { 2555 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 2556 } 2557 } 2558 2559 // TODO - proper iface API for selection by property, inspection, etc 2560 public String[] getTetherableUsbRegexs() { 2561 enforceTetherAccessPermission(); 2562 if (isTetheringSupported()) { 2563 return mTethering.getTetherableUsbRegexs(); 2564 } else { 2565 return new String[0]; 2566 } 2567 } 2568 2569 public String[] getTetherableWifiRegexs() { 2570 enforceTetherAccessPermission(); 2571 if (isTetheringSupported()) { 2572 return mTethering.getTetherableWifiRegexs(); 2573 } else { 2574 return new String[0]; 2575 } 2576 } 2577 2578 public String[] getTetherableBluetoothRegexs() { 2579 enforceTetherAccessPermission(); 2580 if (isTetheringSupported()) { 2581 return mTethering.getTetherableBluetoothRegexs(); 2582 } else { 2583 return new String[0]; 2584 } 2585 } 2586 2587 public int setUsbTethering(boolean enable) { 2588 ConnectivityManager.enforceTetherChangePermission(mContext); 2589 if (isTetheringSupported()) { 2590 return mTethering.setUsbTethering(enable); 2591 } else { 2592 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 2593 } 2594 } 2595 2596 // TODO - move iface listing, queries, etc to new module 2597 // javadoc from interface 2598 public String[] getTetherableIfaces() { 2599 enforceTetherAccessPermission(); 2600 return mTethering.getTetherableIfaces(); 2601 } 2602 2603 public String[] getTetheredIfaces() { 2604 enforceTetherAccessPermission(); 2605 return mTethering.getTetheredIfaces(); 2606 } 2607 2608 public String[] getTetheringErroredIfaces() { 2609 enforceTetherAccessPermission(); 2610 return mTethering.getErroredIfaces(); 2611 } 2612 2613 public String[] getTetheredDhcpRanges() { 2614 enforceConnectivityInternalPermission(); 2615 return mTethering.getTetheredDhcpRanges(); 2616 } 2617 2618 // if ro.tether.denied = true we default to no tethering 2619 // gservices could set the secure setting to 1 though to enable it on a build where it 2620 // had previously been turned off. 2621 public boolean isTetheringSupported() { 2622 enforceTetherAccessPermission(); 2623 int defaultVal = (SystemProperties.get("ro.tether.denied").equals("true") ? 0 : 1); 2624 boolean tetherEnabledInSettings = (Settings.Global.getInt(mContext.getContentResolver(), 2625 Settings.Global.TETHER_SUPPORTED, defaultVal) != 0) 2626 && !mUserManager.hasUserRestriction(UserManager.DISALLOW_CONFIG_TETHERING); 2627 return tetherEnabledInSettings && ((mTethering.getTetherableUsbRegexs().length != 0 || 2628 mTethering.getTetherableWifiRegexs().length != 0 || 2629 mTethering.getTetherableBluetoothRegexs().length != 0) && 2630 mTethering.getUpstreamIfaceTypes().length != 0); 2631 } 2632 2633 // Called when we lose the default network and have no replacement yet. 2634 // This will automatically be cleared after X seconds or a new default network 2635 // becomes CONNECTED, whichever happens first. The timer is started by the 2636 // first caller and not restarted by subsequent callers. 2637 private void requestNetworkTransitionWakelock(String forWhom) { 2638 int serialNum = 0; 2639 synchronized (this) { 2640 if (mNetTransitionWakeLock.isHeld()) return; 2641 serialNum = ++mNetTransitionWakeLockSerialNumber; 2642 mNetTransitionWakeLock.acquire(); 2643 mNetTransitionWakeLockCausedBy = forWhom; 2644 } 2645 mHandler.sendMessageDelayed(mHandler.obtainMessage( 2646 EVENT_EXPIRE_NET_TRANSITION_WAKELOCK, serialNum, 0), 2647 mNetTransitionWakeLockTimeout); 2648 return; 2649 } 2650 2651 // 100 percent is full good, 0 is full bad. 2652 public void reportInetCondition(int networkType, int percentage) { 2653 if (percentage > 50) return; // don't handle good network reports 2654 NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType); 2655 if (nai != null) reportBadNetwork(nai.network); 2656 } 2657 2658 public void reportBadNetwork(Network network) { 2659 enforceAccessPermission(); 2660 enforceInternetPermission(); 2661 2662 if (network == null) return; 2663 2664 final int uid = Binder.getCallingUid(); 2665 NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); 2666 if (nai == null) return; 2667 if (DBG) log("reportBadNetwork(" + nai.name() + ") by " + uid); 2668 synchronized (nai) { 2669 // Validating an uncreated network could result in a call to rematchNetworkAndRequests() 2670 // which isn't meant to work on uncreated networks. 2671 if (!nai.created) return; 2672 2673 if (isNetworkWithLinkPropertiesBlocked(nai.linkProperties, uid)) return; 2674 2675 nai.networkMonitor.sendMessage(NetworkMonitor.CMD_FORCE_REEVALUATION, uid); 2676 } 2677 } 2678 2679 public ProxyInfo getProxy() { 2680 // this information is already available as a world read/writable jvm property 2681 // so this API change wouldn't have a benifit. It also breaks the passing 2682 // of proxy info to all the JVMs. 2683 // enforceAccessPermission(); 2684 synchronized (mProxyLock) { 2685 ProxyInfo ret = mGlobalProxy; 2686 if ((ret == null) && !mDefaultProxyDisabled) ret = mDefaultProxy; 2687 return ret; 2688 } 2689 } 2690 2691 public void setGlobalProxy(ProxyInfo proxyProperties) { 2692 enforceConnectivityInternalPermission(); 2693 2694 synchronized (mProxyLock) { 2695 if (proxyProperties == mGlobalProxy) return; 2696 if (proxyProperties != null && proxyProperties.equals(mGlobalProxy)) return; 2697 if (mGlobalProxy != null && mGlobalProxy.equals(proxyProperties)) return; 2698 2699 String host = ""; 2700 int port = 0; 2701 String exclList = ""; 2702 String pacFileUrl = ""; 2703 if (proxyProperties != null && (!TextUtils.isEmpty(proxyProperties.getHost()) || 2704 !Uri.EMPTY.equals(proxyProperties.getPacFileUrl()))) { 2705 if (!proxyProperties.isValid()) { 2706 if (DBG) 2707 log("Invalid proxy properties, ignoring: " + proxyProperties.toString()); 2708 return; 2709 } 2710 mGlobalProxy = new ProxyInfo(proxyProperties); 2711 host = mGlobalProxy.getHost(); 2712 port = mGlobalProxy.getPort(); 2713 exclList = mGlobalProxy.getExclusionListAsString(); 2714 if (!Uri.EMPTY.equals(proxyProperties.getPacFileUrl())) { 2715 pacFileUrl = proxyProperties.getPacFileUrl().toString(); 2716 } 2717 } else { 2718 mGlobalProxy = null; 2719 } 2720 ContentResolver res = mContext.getContentResolver(); 2721 final long token = Binder.clearCallingIdentity(); 2722 try { 2723 Settings.Global.putString(res, Settings.Global.GLOBAL_HTTP_PROXY_HOST, host); 2724 Settings.Global.putInt(res, Settings.Global.GLOBAL_HTTP_PROXY_PORT, port); 2725 Settings.Global.putString(res, Settings.Global.GLOBAL_HTTP_PROXY_EXCLUSION_LIST, 2726 exclList); 2727 Settings.Global.putString(res, Settings.Global.GLOBAL_HTTP_PROXY_PAC, pacFileUrl); 2728 } finally { 2729 Binder.restoreCallingIdentity(token); 2730 } 2731 2732 if (mGlobalProxy == null) { 2733 proxyProperties = mDefaultProxy; 2734 } 2735 sendProxyBroadcast(proxyProperties); 2736 } 2737 } 2738 2739 private void loadGlobalProxy() { 2740 ContentResolver res = mContext.getContentResolver(); 2741 String host = Settings.Global.getString(res, Settings.Global.GLOBAL_HTTP_PROXY_HOST); 2742 int port = Settings.Global.getInt(res, Settings.Global.GLOBAL_HTTP_PROXY_PORT, 0); 2743 String exclList = Settings.Global.getString(res, 2744 Settings.Global.GLOBAL_HTTP_PROXY_EXCLUSION_LIST); 2745 String pacFileUrl = Settings.Global.getString(res, Settings.Global.GLOBAL_HTTP_PROXY_PAC); 2746 if (!TextUtils.isEmpty(host) || !TextUtils.isEmpty(pacFileUrl)) { 2747 ProxyInfo proxyProperties; 2748 if (!TextUtils.isEmpty(pacFileUrl)) { 2749 proxyProperties = new ProxyInfo(pacFileUrl); 2750 } else { 2751 proxyProperties = new ProxyInfo(host, port, exclList); 2752 } 2753 if (!proxyProperties.isValid()) { 2754 if (DBG) log("Invalid proxy properties, ignoring: " + proxyProperties.toString()); 2755 return; 2756 } 2757 2758 synchronized (mProxyLock) { 2759 mGlobalProxy = proxyProperties; 2760 } 2761 } 2762 } 2763 2764 public ProxyInfo getGlobalProxy() { 2765 // this information is already available as a world read/writable jvm property 2766 // so this API change wouldn't have a benifit. It also breaks the passing 2767 // of proxy info to all the JVMs. 2768 // enforceAccessPermission(); 2769 synchronized (mProxyLock) { 2770 return mGlobalProxy; 2771 } 2772 } 2773 2774 private void handleApplyDefaultProxy(ProxyInfo proxy) { 2775 if (proxy != null && TextUtils.isEmpty(proxy.getHost()) 2776 && Uri.EMPTY.equals(proxy.getPacFileUrl())) { 2777 proxy = null; 2778 } 2779 synchronized (mProxyLock) { 2780 if (mDefaultProxy != null && mDefaultProxy.equals(proxy)) return; 2781 if (mDefaultProxy == proxy) return; // catches repeated nulls 2782 if (proxy != null && !proxy.isValid()) { 2783 if (DBG) log("Invalid proxy properties, ignoring: " + proxy.toString()); 2784 return; 2785 } 2786 2787 // This call could be coming from the PacManager, containing the port of the local 2788 // proxy. If this new proxy matches the global proxy then copy this proxy to the 2789 // global (to get the correct local port), and send a broadcast. 2790 // TODO: Switch PacManager to have its own message to send back rather than 2791 // reusing EVENT_HAS_CHANGED_PROXY and this call to handleApplyDefaultProxy. 2792 if ((mGlobalProxy != null) && (proxy != null) 2793 && (!Uri.EMPTY.equals(proxy.getPacFileUrl())) 2794 && proxy.getPacFileUrl().equals(mGlobalProxy.getPacFileUrl())) { 2795 mGlobalProxy = proxy; 2796 sendProxyBroadcast(mGlobalProxy); 2797 return; 2798 } 2799 mDefaultProxy = proxy; 2800 2801 if (mGlobalProxy != null) return; 2802 if (!mDefaultProxyDisabled) { 2803 sendProxyBroadcast(proxy); 2804 } 2805 } 2806 } 2807 2808 private void handleDeprecatedGlobalHttpProxy() { 2809 String proxy = Settings.Global.getString(mContext.getContentResolver(), 2810 Settings.Global.HTTP_PROXY); 2811 if (!TextUtils.isEmpty(proxy)) { 2812 String data[] = proxy.split(":"); 2813 if (data.length == 0) { 2814 return; 2815 } 2816 2817 String proxyHost = data[0]; 2818 int proxyPort = 8080; 2819 if (data.length > 1) { 2820 try { 2821 proxyPort = Integer.parseInt(data[1]); 2822 } catch (NumberFormatException e) { 2823 return; 2824 } 2825 } 2826 ProxyInfo p = new ProxyInfo(data[0], proxyPort, ""); 2827 setGlobalProxy(p); 2828 } 2829 } 2830 2831 private void sendProxyBroadcast(ProxyInfo proxy) { 2832 if (proxy == null) proxy = new ProxyInfo("", 0, ""); 2833 if (mPacManager.setCurrentProxyScriptUrl(proxy)) return; 2834 if (DBG) log("sending Proxy Broadcast for " + proxy); 2835 Intent intent = new Intent(Proxy.PROXY_CHANGE_ACTION); 2836 intent.addFlags(Intent.FLAG_RECEIVER_REPLACE_PENDING | 2837 Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 2838 intent.putExtra(Proxy.EXTRA_PROXY_INFO, proxy); 2839 final long ident = Binder.clearCallingIdentity(); 2840 try { 2841 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 2842 } finally { 2843 Binder.restoreCallingIdentity(ident); 2844 } 2845 } 2846 2847 private static class SettingsObserver extends ContentObserver { 2848 private int mWhat; 2849 private Handler mHandler; 2850 SettingsObserver(Handler handler, int what) { 2851 super(handler); 2852 mHandler = handler; 2853 mWhat = what; 2854 } 2855 2856 void observe(Context context) { 2857 ContentResolver resolver = context.getContentResolver(); 2858 resolver.registerContentObserver(Settings.Global.getUriFor( 2859 Settings.Global.HTTP_PROXY), false, this); 2860 } 2861 2862 @Override 2863 public void onChange(boolean selfChange) { 2864 mHandler.obtainMessage(mWhat).sendToTarget(); 2865 } 2866 } 2867 2868 private static void log(String s) { 2869 Slog.d(TAG, s); 2870 } 2871 2872 private static void loge(String s) { 2873 Slog.e(TAG, s); 2874 } 2875 2876 private static <T> T checkNotNull(T value, String message) { 2877 if (value == null) { 2878 throw new NullPointerException(message); 2879 } 2880 return value; 2881 } 2882 2883 /** 2884 * Prepare for a VPN application. 2885 * Permissions are checked in Vpn class. 2886 * @hide 2887 */ 2888 @Override 2889 public boolean prepareVpn(String oldPackage, String newPackage) { 2890 throwIfLockdownEnabled(); 2891 int user = UserHandle.getUserId(Binder.getCallingUid()); 2892 synchronized(mVpns) { 2893 return mVpns.get(user).prepare(oldPackage, newPackage); 2894 } 2895 } 2896 2897 /** 2898 * Set whether the current VPN package has the ability to launch VPNs without 2899 * user intervention. This method is used by system-privileged apps. 2900 * Permissions are checked in Vpn class. 2901 * @hide 2902 */ 2903 @Override 2904 public void setVpnPackageAuthorization(boolean authorized) { 2905 int user = UserHandle.getUserId(Binder.getCallingUid()); 2906 synchronized(mVpns) { 2907 mVpns.get(user).setPackageAuthorization(authorized); 2908 } 2909 } 2910 2911 /** 2912 * Configure a TUN interface and return its file descriptor. Parameters 2913 * are encoded and opaque to this class. This method is used by VpnBuilder 2914 * and not available in ConnectivityManager. Permissions are checked in 2915 * Vpn class. 2916 * @hide 2917 */ 2918 @Override 2919 public ParcelFileDescriptor establishVpn(VpnConfig config) { 2920 throwIfLockdownEnabled(); 2921 int user = UserHandle.getUserId(Binder.getCallingUid()); 2922 synchronized(mVpns) { 2923 return mVpns.get(user).establish(config); 2924 } 2925 } 2926 2927 /** 2928 * Start legacy VPN, controlling native daemons as needed. Creates a 2929 * secondary thread to perform connection work, returning quickly. 2930 */ 2931 @Override 2932 public void startLegacyVpn(VpnProfile profile) { 2933 throwIfLockdownEnabled(); 2934 final LinkProperties egress = getActiveLinkProperties(); 2935 if (egress == null) { 2936 throw new IllegalStateException("Missing active network connection"); 2937 } 2938 int user = UserHandle.getUserId(Binder.getCallingUid()); 2939 synchronized(mVpns) { 2940 mVpns.get(user).startLegacyVpn(profile, mKeyStore, egress); 2941 } 2942 } 2943 2944 /** 2945 * Return the information of the ongoing legacy VPN. This method is used 2946 * by VpnSettings and not available in ConnectivityManager. Permissions 2947 * are checked in Vpn class. 2948 * @hide 2949 */ 2950 @Override 2951 public LegacyVpnInfo getLegacyVpnInfo() { 2952 throwIfLockdownEnabled(); 2953 int user = UserHandle.getUserId(Binder.getCallingUid()); 2954 synchronized(mVpns) { 2955 return mVpns.get(user).getLegacyVpnInfo(); 2956 } 2957 } 2958 2959 /** 2960 * Returns the information of the ongoing VPN. This method is used by VpnDialogs and 2961 * not available in ConnectivityManager. 2962 * Permissions are checked in Vpn class. 2963 * @hide 2964 */ 2965 @Override 2966 public VpnConfig getVpnConfig() { 2967 int user = UserHandle.getUserId(Binder.getCallingUid()); 2968 synchronized(mVpns) { 2969 return mVpns.get(user).getVpnConfig(); 2970 } 2971 } 2972 2973 @Override 2974 public boolean updateLockdownVpn() { 2975 if (Binder.getCallingUid() != Process.SYSTEM_UID) { 2976 Slog.w(TAG, "Lockdown VPN only available to AID_SYSTEM"); 2977 return false; 2978 } 2979 2980 // Tear down existing lockdown if profile was removed 2981 mLockdownEnabled = LockdownVpnTracker.isEnabled(); 2982 if (mLockdownEnabled) { 2983 if (!mKeyStore.isUnlocked()) { 2984 Slog.w(TAG, "KeyStore locked; unable to create LockdownTracker"); 2985 return false; 2986 } 2987 2988 final String profileName = new String(mKeyStore.get(Credentials.LOCKDOWN_VPN)); 2989 final VpnProfile profile = VpnProfile.decode( 2990 profileName, mKeyStore.get(Credentials.VPN + profileName)); 2991 int user = UserHandle.getUserId(Binder.getCallingUid()); 2992 synchronized(mVpns) { 2993 setLockdownTracker(new LockdownVpnTracker(mContext, mNetd, this, mVpns.get(user), 2994 profile)); 2995 } 2996 } else { 2997 setLockdownTracker(null); 2998 } 2999 3000 return true; 3001 } 3002 3003 /** 3004 * Internally set new {@link LockdownVpnTracker}, shutting down any existing 3005 * {@link LockdownVpnTracker}. Can be {@code null} to disable lockdown. 3006 */ 3007 private void setLockdownTracker(LockdownVpnTracker tracker) { 3008 // Shutdown any existing tracker 3009 final LockdownVpnTracker existing = mLockdownTracker; 3010 mLockdownTracker = null; 3011 if (existing != null) { 3012 existing.shutdown(); 3013 } 3014 3015 try { 3016 if (tracker != null) { 3017 mNetd.setFirewallEnabled(true); 3018 mNetd.setFirewallInterfaceRule("lo", true); 3019 mLockdownTracker = tracker; 3020 mLockdownTracker.init(); 3021 } else { 3022 mNetd.setFirewallEnabled(false); 3023 } 3024 } catch (RemoteException e) { 3025 // ignored; NMS lives inside system_server 3026 } 3027 } 3028 3029 private void throwIfLockdownEnabled() { 3030 if (mLockdownEnabled) { 3031 throw new IllegalStateException("Unavailable in lockdown mode"); 3032 } 3033 } 3034 3035 public void supplyMessenger(int networkType, Messenger messenger) { 3036 enforceConnectivityInternalPermission(); 3037 3038 if (isNetworkTypeValid(networkType) && mNetTrackers[networkType] != null) { 3039 mNetTrackers[networkType].supplyMessenger(messenger); 3040 } 3041 } 3042 3043 public int findConnectionTypeForIface(String iface) { 3044 enforceConnectivityInternalPermission(); 3045 3046 if (TextUtils.isEmpty(iface)) return ConnectivityManager.TYPE_NONE; 3047 3048 synchronized(mNetworkForNetId) { 3049 for (int i = 0; i < mNetworkForNetId.size(); i++) { 3050 NetworkAgentInfo nai = mNetworkForNetId.valueAt(i); 3051 LinkProperties lp = nai.linkProperties; 3052 if (lp != null && iface.equals(lp.getInterfaceName()) && nai.networkInfo != null) { 3053 return nai.networkInfo.getType(); 3054 } 3055 } 3056 } 3057 return ConnectivityManager.TYPE_NONE; 3058 } 3059 3060 /** 3061 * Have mobile data fail fast if enabled. 3062 * 3063 * @param enabled DctConstants.ENABLED/DISABLED 3064 */ 3065 private void setEnableFailFastMobileData(int enabled) { 3066 int tag; 3067 3068 if (enabled == DctConstants.ENABLED) { 3069 tag = mEnableFailFastMobileDataTag.incrementAndGet(); 3070 } else { 3071 tag = mEnableFailFastMobileDataTag.get(); 3072 } 3073 mHandler.sendMessage(mHandler.obtainMessage(EVENT_ENABLE_FAIL_FAST_MOBILE_DATA, tag, 3074 enabled)); 3075 } 3076 3077 @Override 3078 public int checkMobileProvisioning(int suggestedTimeOutMs) { 3079 // TODO: Remove? Any reason to trigger a provisioning check? 3080 return -1; 3081 } 3082 3083 private static final String NOTIFICATION_ID = "CaptivePortal.Notification"; 3084 private volatile boolean mIsNotificationVisible = false; 3085 3086 private void setProvNotificationVisible(boolean visible, int networkType, String action) { 3087 if (DBG) { 3088 log("setProvNotificationVisible: E visible=" + visible + " networkType=" + networkType 3089 + " action=" + action); 3090 } 3091 Intent intent = new Intent(action); 3092 PendingIntent pendingIntent = PendingIntent.getBroadcast(mContext, 0, intent, 0); 3093 // Concatenate the range of types onto the range of NetIDs. 3094 int id = MAX_NET_ID + 1 + (networkType - ConnectivityManager.TYPE_NONE); 3095 setProvNotificationVisibleIntent(visible, id, networkType, null, pendingIntent); 3096 } 3097 3098 /** 3099 * Show or hide network provisioning notificaitons. 3100 * 3101 * @param id an identifier that uniquely identifies this notification. This must match 3102 * between show and hide calls. We use the NetID value but for legacy callers 3103 * we concatenate the range of types with the range of NetIDs. 3104 */ 3105 private void setProvNotificationVisibleIntent(boolean visible, int id, int networkType, 3106 String extraInfo, PendingIntent intent) { 3107 if (DBG) { 3108 log("setProvNotificationVisibleIntent: E visible=" + visible + " networkType=" + 3109 networkType + " extraInfo=" + extraInfo); 3110 } 3111 3112 Resources r = Resources.getSystem(); 3113 NotificationManager notificationManager = (NotificationManager) mContext 3114 .getSystemService(Context.NOTIFICATION_SERVICE); 3115 3116 if (visible) { 3117 CharSequence title; 3118 CharSequence details; 3119 int icon; 3120 Notification notification = new Notification(); 3121 switch (networkType) { 3122 case ConnectivityManager.TYPE_WIFI: 3123 title = r.getString(R.string.wifi_available_sign_in, 0); 3124 details = r.getString(R.string.network_available_sign_in_detailed, 3125 extraInfo); 3126 icon = R.drawable.stat_notify_wifi_in_range; 3127 break; 3128 case ConnectivityManager.TYPE_MOBILE: 3129 case ConnectivityManager.TYPE_MOBILE_HIPRI: 3130 title = r.getString(R.string.network_available_sign_in, 0); 3131 // TODO: Change this to pull from NetworkInfo once a printable 3132 // name has been added to it 3133 details = mTelephonyManager.getNetworkOperatorName(); 3134 icon = R.drawable.stat_notify_rssi_in_range; 3135 break; 3136 default: 3137 title = r.getString(R.string.network_available_sign_in, 0); 3138 details = r.getString(R.string.network_available_sign_in_detailed, 3139 extraInfo); 3140 icon = R.drawable.stat_notify_rssi_in_range; 3141 break; 3142 } 3143 3144 notification.when = 0; 3145 notification.icon = icon; 3146 notification.flags = Notification.FLAG_AUTO_CANCEL; 3147 notification.tickerText = title; 3148 notification.color = mContext.getResources().getColor( 3149 com.android.internal.R.color.system_notification_accent_color); 3150 notification.setLatestEventInfo(mContext, title, details, notification.contentIntent); 3151 notification.contentIntent = intent; 3152 3153 try { 3154 notificationManager.notify(NOTIFICATION_ID, id, notification); 3155 } catch (NullPointerException npe) { 3156 loge("setNotificaitionVisible: visible notificationManager npe=" + npe); 3157 npe.printStackTrace(); 3158 } 3159 } else { 3160 try { 3161 notificationManager.cancel(NOTIFICATION_ID, id); 3162 } catch (NullPointerException npe) { 3163 loge("setNotificaitionVisible: cancel notificationManager npe=" + npe); 3164 npe.printStackTrace(); 3165 } 3166 } 3167 mIsNotificationVisible = visible; 3168 } 3169 3170 /** Location to an updatable file listing carrier provisioning urls. 3171 * An example: 3172 * 3173 * <?xml version="1.0" encoding="utf-8"?> 3174 * <provisioningUrls> 3175 * <provisioningUrl mcc="310" mnc="4">http://myserver.com/foo?mdn=%3$s&iccid=%1$s&imei=%2$s</provisioningUrl> 3176 * <redirectedUrl mcc="310" mnc="4">http://www.google.com</redirectedUrl> 3177 * </provisioningUrls> 3178 */ 3179 private static final String PROVISIONING_URL_PATH = 3180 "/data/misc/radio/provisioning_urls.xml"; 3181 private final File mProvisioningUrlFile = new File(PROVISIONING_URL_PATH); 3182 3183 /** XML tag for root element. */ 3184 private static final String TAG_PROVISIONING_URLS = "provisioningUrls"; 3185 /** XML tag for individual url */ 3186 private static final String TAG_PROVISIONING_URL = "provisioningUrl"; 3187 /** XML tag for redirected url */ 3188 private static final String TAG_REDIRECTED_URL = "redirectedUrl"; 3189 /** XML attribute for mcc */ 3190 private static final String ATTR_MCC = "mcc"; 3191 /** XML attribute for mnc */ 3192 private static final String ATTR_MNC = "mnc"; 3193 3194 private static final int REDIRECTED_PROVISIONING = 1; 3195 private static final int PROVISIONING = 2; 3196 3197 private String getProvisioningUrlBaseFromFile(int type) { 3198 FileReader fileReader = null; 3199 XmlPullParser parser = null; 3200 Configuration config = mContext.getResources().getConfiguration(); 3201 String tagType; 3202 3203 switch (type) { 3204 case PROVISIONING: 3205 tagType = TAG_PROVISIONING_URL; 3206 break; 3207 case REDIRECTED_PROVISIONING: 3208 tagType = TAG_REDIRECTED_URL; 3209 break; 3210 default: 3211 throw new RuntimeException("getProvisioningUrlBaseFromFile: Unexpected parameter " + 3212 type); 3213 } 3214 3215 try { 3216 fileReader = new FileReader(mProvisioningUrlFile); 3217 parser = Xml.newPullParser(); 3218 parser.setInput(fileReader); 3219 XmlUtils.beginDocument(parser, TAG_PROVISIONING_URLS); 3220 3221 while (true) { 3222 XmlUtils.nextElement(parser); 3223 3224 String element = parser.getName(); 3225 if (element == null) break; 3226 3227 if (element.equals(tagType)) { 3228 String mcc = parser.getAttributeValue(null, ATTR_MCC); 3229 try { 3230 if (mcc != null && Integer.parseInt(mcc) == config.mcc) { 3231 String mnc = parser.getAttributeValue(null, ATTR_MNC); 3232 if (mnc != null && Integer.parseInt(mnc) == config.mnc) { 3233 parser.next(); 3234 if (parser.getEventType() == XmlPullParser.TEXT) { 3235 return parser.getText(); 3236 } 3237 } 3238 } 3239 } catch (NumberFormatException e) { 3240 loge("NumberFormatException in getProvisioningUrlBaseFromFile: " + e); 3241 } 3242 } 3243 } 3244 return null; 3245 } catch (FileNotFoundException e) { 3246 loge("Carrier Provisioning Urls file not found"); 3247 } catch (XmlPullParserException e) { 3248 loge("Xml parser exception reading Carrier Provisioning Urls file: " + e); 3249 } catch (IOException e) { 3250 loge("I/O exception reading Carrier Provisioning Urls file: " + e); 3251 } finally { 3252 if (fileReader != null) { 3253 try { 3254 fileReader.close(); 3255 } catch (IOException e) {} 3256 } 3257 } 3258 return null; 3259 } 3260 3261 @Override 3262 public String getMobileRedirectedProvisioningUrl() { 3263 enforceConnectivityInternalPermission(); 3264 String url = getProvisioningUrlBaseFromFile(REDIRECTED_PROVISIONING); 3265 if (TextUtils.isEmpty(url)) { 3266 url = mContext.getResources().getString(R.string.mobile_redirected_provisioning_url); 3267 } 3268 return url; 3269 } 3270 3271 @Override 3272 public String getMobileProvisioningUrl() { 3273 enforceConnectivityInternalPermission(); 3274 String url = getProvisioningUrlBaseFromFile(PROVISIONING); 3275 if (TextUtils.isEmpty(url)) { 3276 url = mContext.getResources().getString(R.string.mobile_provisioning_url); 3277 log("getMobileProvisioningUrl: mobile_provisioining_url from resource =" + url); 3278 } else { 3279 log("getMobileProvisioningUrl: mobile_provisioning_url from File =" + url); 3280 } 3281 // populate the iccid, imei and phone number in the provisioning url. 3282 if (!TextUtils.isEmpty(url)) { 3283 String phoneNumber = mTelephonyManager.getLine1Number(); 3284 if (TextUtils.isEmpty(phoneNumber)) { 3285 phoneNumber = "0000000000"; 3286 } 3287 url = String.format(url, 3288 mTelephonyManager.getSimSerialNumber() /* ICCID */, 3289 mTelephonyManager.getDeviceId() /* IMEI */, 3290 phoneNumber /* Phone numer */); 3291 } 3292 3293 return url; 3294 } 3295 3296 @Override 3297 public void setProvisioningNotificationVisible(boolean visible, int networkType, 3298 String action) { 3299 enforceConnectivityInternalPermission(); 3300 final long ident = Binder.clearCallingIdentity(); 3301 try { 3302 setProvNotificationVisible(visible, networkType, action); 3303 } finally { 3304 Binder.restoreCallingIdentity(ident); 3305 } 3306 } 3307 3308 @Override 3309 public void setAirplaneMode(boolean enable) { 3310 enforceConnectivityInternalPermission(); 3311 final long ident = Binder.clearCallingIdentity(); 3312 try { 3313 final ContentResolver cr = mContext.getContentResolver(); 3314 Settings.Global.putInt(cr, Settings.Global.AIRPLANE_MODE_ON, enable ? 1 : 0); 3315 Intent intent = new Intent(Intent.ACTION_AIRPLANE_MODE_CHANGED); 3316 intent.putExtra("state", enable); 3317 mContext.sendBroadcastAsUser(intent, UserHandle.ALL); 3318 } finally { 3319 Binder.restoreCallingIdentity(ident); 3320 } 3321 } 3322 3323 private void onUserStart(int userId) { 3324 synchronized(mVpns) { 3325 Vpn userVpn = mVpns.get(userId); 3326 if (userVpn != null) { 3327 loge("Starting user already has a VPN"); 3328 return; 3329 } 3330 userVpn = new Vpn(mHandler.getLooper(), mContext, mNetd, this, userId); 3331 mVpns.put(userId, userVpn); 3332 } 3333 } 3334 3335 private void onUserStop(int userId) { 3336 synchronized(mVpns) { 3337 Vpn userVpn = mVpns.get(userId); 3338 if (userVpn == null) { 3339 loge("Stopping user has no VPN"); 3340 return; 3341 } 3342 mVpns.delete(userId); 3343 } 3344 } 3345 3346 private BroadcastReceiver mUserIntentReceiver = new BroadcastReceiver() { 3347 @Override 3348 public void onReceive(Context context, Intent intent) { 3349 final String action = intent.getAction(); 3350 final int userId = intent.getIntExtra(Intent.EXTRA_USER_HANDLE, UserHandle.USER_NULL); 3351 if (userId == UserHandle.USER_NULL) return; 3352 3353 if (Intent.ACTION_USER_STARTING.equals(action)) { 3354 onUserStart(userId); 3355 } else if (Intent.ACTION_USER_STOPPING.equals(action)) { 3356 onUserStop(userId); 3357 } 3358 } 3359 }; 3360 3361 /* Infrastructure for network sampling */ 3362 3363 private void handleNetworkSamplingTimeout() { 3364 3365 if (SAMPLE_DBG) log("Sampling interval elapsed, updating statistics .."); 3366 3367 // initialize list of interfaces .. 3368 Map<String, SamplingDataTracker.SamplingSnapshot> mapIfaceToSample = 3369 new HashMap<String, SamplingDataTracker.SamplingSnapshot>(); 3370 for (NetworkStateTracker tracker : mNetTrackers) { 3371 if (tracker != null) { 3372 String ifaceName = tracker.getNetworkInterfaceName(); 3373 if (ifaceName != null) { 3374 mapIfaceToSample.put(ifaceName, null); 3375 } 3376 } 3377 } 3378 3379 // Read samples for all interfaces 3380 SamplingDataTracker.getSamplingSnapshots(mapIfaceToSample); 3381 3382 // process samples for all networks 3383 for (NetworkStateTracker tracker : mNetTrackers) { 3384 if (tracker != null) { 3385 String ifaceName = tracker.getNetworkInterfaceName(); 3386 SamplingDataTracker.SamplingSnapshot ss = mapIfaceToSample.get(ifaceName); 3387 if (ss != null) { 3388 // end the previous sampling cycle 3389 tracker.stopSampling(ss); 3390 // start a new sampling cycle .. 3391 tracker.startSampling(ss); 3392 } 3393 } 3394 } 3395 3396 if (SAMPLE_DBG) log("Done."); 3397 3398 int samplingIntervalInSeconds = Settings.Global.getInt(mContext.getContentResolver(), 3399 Settings.Global.CONNECTIVITY_SAMPLING_INTERVAL_IN_SECONDS, 3400 DEFAULT_SAMPLING_INTERVAL_IN_SECONDS); 3401 3402 if (SAMPLE_DBG) { 3403 log("Setting timer for " + String.valueOf(samplingIntervalInSeconds) + "seconds"); 3404 } 3405 3406 setAlarm(samplingIntervalInSeconds * 1000, mSampleIntervalElapsedIntent); 3407 } 3408 3409 /** 3410 * Sets a network sampling alarm. 3411 */ 3412 void setAlarm(int timeoutInMilliseconds, PendingIntent intent) { 3413 long wakeupTime = SystemClock.elapsedRealtime() + timeoutInMilliseconds; 3414 int alarmType; 3415 if (Resources.getSystem().getBoolean( 3416 R.bool.config_networkSamplingWakesDevice)) { 3417 alarmType = AlarmManager.ELAPSED_REALTIME_WAKEUP; 3418 } else { 3419 alarmType = AlarmManager.ELAPSED_REALTIME; 3420 } 3421 mAlarmManager.set(alarmType, wakeupTime, intent); 3422 } 3423 3424 private final HashMap<Messenger, NetworkFactoryInfo> mNetworkFactoryInfos = 3425 new HashMap<Messenger, NetworkFactoryInfo>(); 3426 private final HashMap<NetworkRequest, NetworkRequestInfo> mNetworkRequests = 3427 new HashMap<NetworkRequest, NetworkRequestInfo>(); 3428 3429 private static class NetworkFactoryInfo { 3430 public final String name; 3431 public final Messenger messenger; 3432 public final AsyncChannel asyncChannel; 3433 3434 public NetworkFactoryInfo(String name, Messenger messenger, AsyncChannel asyncChannel) { 3435 this.name = name; 3436 this.messenger = messenger; 3437 this.asyncChannel = asyncChannel; 3438 } 3439 } 3440 3441 /** 3442 * Tracks info about the requester. 3443 * Also used to notice when the calling process dies so we can self-expire 3444 */ 3445 private class NetworkRequestInfo implements IBinder.DeathRecipient { 3446 static final boolean REQUEST = true; 3447 static final boolean LISTEN = false; 3448 3449 final NetworkRequest request; 3450 final PendingIntent mPendingIntent; 3451 boolean mPendingIntentSent; 3452 private final IBinder mBinder; 3453 final int mPid; 3454 final int mUid; 3455 final Messenger messenger; 3456 final boolean isRequest; 3457 3458 NetworkRequestInfo(NetworkRequest r, PendingIntent pi, boolean isRequest) { 3459 request = r; 3460 mPendingIntent = pi; 3461 messenger = null; 3462 mBinder = null; 3463 mPid = getCallingPid(); 3464 mUid = getCallingUid(); 3465 this.isRequest = isRequest; 3466 } 3467 3468 NetworkRequestInfo(Messenger m, NetworkRequest r, IBinder binder, boolean isRequest) { 3469 super(); 3470 messenger = m; 3471 request = r; 3472 mBinder = binder; 3473 mPid = getCallingPid(); 3474 mUid = getCallingUid(); 3475 this.isRequest = isRequest; 3476 mPendingIntent = null; 3477 3478 try { 3479 mBinder.linkToDeath(this, 0); 3480 } catch (RemoteException e) { 3481 binderDied(); 3482 } 3483 } 3484 3485 void unlinkDeathRecipient() { 3486 if (mBinder != null) { 3487 mBinder.unlinkToDeath(this, 0); 3488 } 3489 } 3490 3491 public void binderDied() { 3492 log("ConnectivityService NetworkRequestInfo binderDied(" + 3493 request + ", " + mBinder + ")"); 3494 releaseNetworkRequest(request); 3495 } 3496 3497 public String toString() { 3498 return (isRequest ? "Request" : "Listen") + " from uid/pid:" + mUid + "/" + 3499 mPid + " for " + request + 3500 (mPendingIntent == null ? "" : " to trigger " + mPendingIntent); 3501 } 3502 } 3503 3504 @Override 3505 public NetworkRequest requestNetwork(NetworkCapabilities networkCapabilities, 3506 Messenger messenger, int timeoutMs, IBinder binder, int legacyType) { 3507 networkCapabilities = new NetworkCapabilities(networkCapabilities); 3508 enforceNetworkRequestPermissions(networkCapabilities); 3509 enforceMeteredApnPolicy(networkCapabilities); 3510 3511 if (timeoutMs < 0 || timeoutMs > ConnectivityManager.MAX_NETWORK_REQUEST_TIMEOUT_MS) { 3512 throw new IllegalArgumentException("Bad timeout specified"); 3513 } 3514 3515 NetworkRequest networkRequest = new NetworkRequest(networkCapabilities, legacyType, 3516 nextNetworkRequestId()); 3517 if (DBG) log("requestNetwork for " + networkRequest); 3518 NetworkRequestInfo nri = new NetworkRequestInfo(messenger, networkRequest, binder, 3519 NetworkRequestInfo.REQUEST); 3520 3521 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_REQUEST, nri)); 3522 if (timeoutMs > 0) { 3523 mHandler.sendMessageDelayed(mHandler.obtainMessage(EVENT_TIMEOUT_NETWORK_REQUEST, 3524 nri), timeoutMs); 3525 } 3526 return networkRequest; 3527 } 3528 3529 private void enforceNetworkRequestPermissions(NetworkCapabilities networkCapabilities) { 3530 if (networkCapabilities.hasCapability(NetworkCapabilities.NET_CAPABILITY_NOT_RESTRICTED) 3531 == false) { 3532 enforceConnectivityInternalPermission(); 3533 } else { 3534 enforceChangePermission(); 3535 } 3536 } 3537 3538 private void enforceMeteredApnPolicy(NetworkCapabilities networkCapabilities) { 3539 // if UID is restricted, don't allow them to bring up metered APNs 3540 if (networkCapabilities.hasCapability(NetworkCapabilities.NET_CAPABILITY_NOT_METERED) 3541 == false) { 3542 final int uidRules; 3543 final int uid = Binder.getCallingUid(); 3544 synchronized(mRulesLock) { 3545 uidRules = mUidRules.get(uid, RULE_ALLOW_ALL); 3546 } 3547 if ((uidRules & RULE_REJECT_METERED) != 0) { 3548 // we could silently fail or we can filter the available nets to only give 3549 // them those they have access to. Chose the more useful 3550 networkCapabilities.addCapability(NetworkCapabilities.NET_CAPABILITY_NOT_METERED); 3551 } 3552 } 3553 } 3554 3555 @Override 3556 public NetworkRequest pendingRequestForNetwork(NetworkCapabilities networkCapabilities, 3557 PendingIntent operation) { 3558 checkNotNull(operation, "PendingIntent cannot be null."); 3559 networkCapabilities = new NetworkCapabilities(networkCapabilities); 3560 enforceNetworkRequestPermissions(networkCapabilities); 3561 enforceMeteredApnPolicy(networkCapabilities); 3562 3563 NetworkRequest networkRequest = new NetworkRequest(networkCapabilities, TYPE_NONE, 3564 nextNetworkRequestId()); 3565 if (DBG) log("pendingRequest for " + networkRequest + " to trigger " + operation); 3566 NetworkRequestInfo nri = new NetworkRequestInfo(networkRequest, operation, 3567 NetworkRequestInfo.REQUEST); 3568 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_REQUEST_WITH_INTENT, 3569 nri)); 3570 return networkRequest; 3571 } 3572 3573 private void releasePendingNetworkRequestWithDelay(PendingIntent operation) { 3574 mHandler.sendMessageDelayed( 3575 mHandler.obtainMessage(EVENT_RELEASE_NETWORK_REQUEST_WITH_INTENT, 3576 getCallingUid(), 0, operation), mReleasePendingIntentDelayMs); 3577 } 3578 3579 @Override 3580 public void releasePendingNetworkRequest(PendingIntent operation) { 3581 mHandler.sendMessage(mHandler.obtainMessage(EVENT_RELEASE_NETWORK_REQUEST_WITH_INTENT, 3582 getCallingUid(), 0, operation)); 3583 } 3584 3585 @Override 3586 public NetworkRequest listenForNetwork(NetworkCapabilities networkCapabilities, 3587 Messenger messenger, IBinder binder) { 3588 enforceAccessPermission(); 3589 3590 NetworkRequest networkRequest = new NetworkRequest(new NetworkCapabilities( 3591 networkCapabilities), TYPE_NONE, nextNetworkRequestId()); 3592 if (DBG) log("listenForNetwork for " + networkRequest); 3593 NetworkRequestInfo nri = new NetworkRequestInfo(messenger, networkRequest, binder, 3594 NetworkRequestInfo.LISTEN); 3595 3596 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_LISTENER, nri)); 3597 return networkRequest; 3598 } 3599 3600 @Override 3601 public void pendingListenForNetwork(NetworkCapabilities networkCapabilities, 3602 PendingIntent operation) { 3603 } 3604 3605 @Override 3606 public void releaseNetworkRequest(NetworkRequest networkRequest) { 3607 mHandler.sendMessage(mHandler.obtainMessage(EVENT_RELEASE_NETWORK_REQUEST, getCallingUid(), 3608 0, networkRequest)); 3609 } 3610 3611 @Override 3612 public void registerNetworkFactory(Messenger messenger, String name) { 3613 enforceConnectivityInternalPermission(); 3614 NetworkFactoryInfo nfi = new NetworkFactoryInfo(name, messenger, new AsyncChannel()); 3615 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_FACTORY, nfi)); 3616 } 3617 3618 private void handleRegisterNetworkFactory(NetworkFactoryInfo nfi) { 3619 if (DBG) log("Got NetworkFactory Messenger for " + nfi.name); 3620 mNetworkFactoryInfos.put(nfi.messenger, nfi); 3621 nfi.asyncChannel.connect(mContext, mTrackerHandler, nfi.messenger); 3622 } 3623 3624 @Override 3625 public void unregisterNetworkFactory(Messenger messenger) { 3626 enforceConnectivityInternalPermission(); 3627 mHandler.sendMessage(mHandler.obtainMessage(EVENT_UNREGISTER_NETWORK_FACTORY, messenger)); 3628 } 3629 3630 private void handleUnregisterNetworkFactory(Messenger messenger) { 3631 NetworkFactoryInfo nfi = mNetworkFactoryInfos.remove(messenger); 3632 if (nfi == null) { 3633 loge("Failed to find Messenger in unregisterNetworkFactory"); 3634 return; 3635 } 3636 if (DBG) log("unregisterNetworkFactory for " + nfi.name); 3637 } 3638 3639 /** 3640 * NetworkAgentInfo supporting a request by requestId. 3641 * These have already been vetted (their Capabilities satisfy the request) 3642 * and the are the highest scored network available. 3643 * the are keyed off the Requests requestId. 3644 */ 3645 private final SparseArray<NetworkAgentInfo> mNetworkForRequestId = 3646 new SparseArray<NetworkAgentInfo>(); 3647 3648 private final SparseArray<NetworkAgentInfo> mNetworkForNetId = 3649 new SparseArray<NetworkAgentInfo>(); 3650 3651 // NetworkAgentInfo keyed off its connecting messenger 3652 // TODO - eval if we can reduce the number of lists/hashmaps/sparsearrays 3653 private final HashMap<Messenger, NetworkAgentInfo> mNetworkAgentInfos = 3654 new HashMap<Messenger, NetworkAgentInfo>(); 3655 3656 // Note: if mDefaultRequest is changed, NetworkMonitor needs to be updated. 3657 private final NetworkRequest mDefaultRequest; 3658 3659 private NetworkAgentInfo getDefaultNetwork() { 3660 return mNetworkForRequestId.get(mDefaultRequest.requestId); 3661 } 3662 3663 private boolean isDefaultNetwork(NetworkAgentInfo nai) { 3664 return nai == getDefaultNetwork(); 3665 } 3666 3667 public void registerNetworkAgent(Messenger messenger, NetworkInfo networkInfo, 3668 LinkProperties linkProperties, NetworkCapabilities networkCapabilities, 3669 int currentScore, NetworkMisc networkMisc) { 3670 enforceConnectivityInternalPermission(); 3671 3672 // TODO: Instead of passing mDefaultRequest, provide an API to determine whether a Network 3673 // satisfies mDefaultRequest. 3674 NetworkAgentInfo nai = new NetworkAgentInfo(messenger, new AsyncChannel(), 3675 new NetworkInfo(networkInfo), new LinkProperties(linkProperties), 3676 new NetworkCapabilities(networkCapabilities), currentScore, mContext, mTrackerHandler, 3677 new NetworkMisc(networkMisc), mDefaultRequest); 3678 synchronized (this) { 3679 nai.networkMonitor.systemReady = mSystemReady; 3680 } 3681 if (DBG) log("registerNetworkAgent " + nai); 3682 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_AGENT, nai)); 3683 } 3684 3685 private void handleRegisterNetworkAgent(NetworkAgentInfo na) { 3686 if (VDBG) log("Got NetworkAgent Messenger"); 3687 mNetworkAgentInfos.put(na.messenger, na); 3688 assignNextNetId(na); 3689 na.asyncChannel.connect(mContext, mTrackerHandler, na.messenger); 3690 NetworkInfo networkInfo = na.networkInfo; 3691 na.networkInfo = null; 3692 updateNetworkInfo(na, networkInfo); 3693 } 3694 3695 private void updateLinkProperties(NetworkAgentInfo networkAgent, LinkProperties oldLp) { 3696 LinkProperties newLp = networkAgent.linkProperties; 3697 int netId = networkAgent.network.netId; 3698 3699 // The NetworkAgentInfo does not know whether clatd is running on its network or not. Before 3700 // we do anything else, make sure its LinkProperties are accurate. 3701 if (networkAgent.clatd != null) { 3702 networkAgent.clatd.fixupLinkProperties(oldLp); 3703 } 3704 3705 updateInterfaces(newLp, oldLp, netId); 3706 updateMtu(newLp, oldLp); 3707 // TODO - figure out what to do for clat 3708// for (LinkProperties lp : newLp.getStackedLinks()) { 3709// updateMtu(lp, null); 3710// } 3711 updateTcpBufferSizes(networkAgent); 3712 3713 // TODO: deprecate and remove mDefaultDns when we can do so safely. 3714 // For now, use it only when the network has Internet access. http://b/18327075 3715 final boolean useDefaultDns = networkAgent.networkCapabilities.hasCapability( 3716 NetworkCapabilities.NET_CAPABILITY_INTERNET); 3717 final boolean flushDns = updateRoutes(newLp, oldLp, netId); 3718 updateDnses(newLp, oldLp, netId, flushDns, useDefaultDns); 3719 3720 updateClat(newLp, oldLp, networkAgent); 3721 if (isDefaultNetwork(networkAgent)) handleApplyDefaultProxy(newLp.getHttpProxy()); 3722 // TODO - move this check to cover the whole function 3723 if (!Objects.equals(newLp, oldLp)) { 3724 notifyNetworkCallbacks(networkAgent, ConnectivityManager.CALLBACK_IP_CHANGED); 3725 } 3726 } 3727 3728 private void updateClat(LinkProperties newLp, LinkProperties oldLp, NetworkAgentInfo nai) { 3729 final boolean wasRunningClat = nai.clatd != null && nai.clatd.isStarted(); 3730 final boolean shouldRunClat = Nat464Xlat.requiresClat(nai); 3731 3732 if (!wasRunningClat && shouldRunClat) { 3733 nai.clatd = new Nat464Xlat(mContext, mNetd, mTrackerHandler, nai); 3734 nai.clatd.start(); 3735 } else if (wasRunningClat && !shouldRunClat) { 3736 nai.clatd.stop(); 3737 } 3738 } 3739 3740 private void updateInterfaces(LinkProperties newLp, LinkProperties oldLp, int netId) { 3741 CompareResult<String> interfaceDiff = new CompareResult<String>(); 3742 if (oldLp != null) { 3743 interfaceDiff = oldLp.compareAllInterfaceNames(newLp); 3744 } else if (newLp != null) { 3745 interfaceDiff.added = newLp.getAllInterfaceNames(); 3746 } 3747 for (String iface : interfaceDiff.added) { 3748 try { 3749 if (DBG) log("Adding iface " + iface + " to network " + netId); 3750 mNetd.addInterfaceToNetwork(iface, netId); 3751 } catch (Exception e) { 3752 loge("Exception adding interface: " + e); 3753 } 3754 } 3755 for (String iface : interfaceDiff.removed) { 3756 try { 3757 if (DBG) log("Removing iface " + iface + " from network " + netId); 3758 mNetd.removeInterfaceFromNetwork(iface, netId); 3759 } catch (Exception e) { 3760 loge("Exception removing interface: " + e); 3761 } 3762 } 3763 } 3764 3765 /** 3766 * Have netd update routes from oldLp to newLp. 3767 * @return true if routes changed between oldLp and newLp 3768 */ 3769 private boolean updateRoutes(LinkProperties newLp, LinkProperties oldLp, int netId) { 3770 CompareResult<RouteInfo> routeDiff = new CompareResult<RouteInfo>(); 3771 if (oldLp != null) { 3772 routeDiff = oldLp.compareAllRoutes(newLp); 3773 } else if (newLp != null) { 3774 routeDiff.added = newLp.getAllRoutes(); 3775 } 3776 3777 // add routes before removing old in case it helps with continuous connectivity 3778 3779 // do this twice, adding non-nexthop routes first, then routes they are dependent on 3780 for (RouteInfo route : routeDiff.added) { 3781 if (route.hasGateway()) continue; 3782 if (DBG) log("Adding Route [" + route + "] to network " + netId); 3783 try { 3784 mNetd.addRoute(netId, route); 3785 } catch (Exception e) { 3786 if ((route.getDestination().getAddress() instanceof Inet4Address) || VDBG) { 3787 loge("Exception in addRoute for non-gateway: " + e); 3788 } 3789 } 3790 } 3791 for (RouteInfo route : routeDiff.added) { 3792 if (route.hasGateway() == false) continue; 3793 if (DBG) log("Adding Route [" + route + "] to network " + netId); 3794 try { 3795 mNetd.addRoute(netId, route); 3796 } catch (Exception e) { 3797 if ((route.getGateway() instanceof Inet4Address) || VDBG) { 3798 loge("Exception in addRoute for gateway: " + e); 3799 } 3800 } 3801 } 3802 3803 for (RouteInfo route : routeDiff.removed) { 3804 if (DBG) log("Removing Route [" + route + "] from network " + netId); 3805 try { 3806 mNetd.removeRoute(netId, route); 3807 } catch (Exception e) { 3808 loge("Exception in removeRoute: " + e); 3809 } 3810 } 3811 return !routeDiff.added.isEmpty() || !routeDiff.removed.isEmpty(); 3812 } 3813 private void updateDnses(LinkProperties newLp, LinkProperties oldLp, int netId, 3814 boolean flush, boolean useDefaultDns) { 3815 if (oldLp == null || (newLp.isIdenticalDnses(oldLp) == false)) { 3816 Collection<InetAddress> dnses = newLp.getDnsServers(); 3817 if (dnses.size() == 0 && mDefaultDns != null && useDefaultDns) { 3818 dnses = new ArrayList(); 3819 dnses.add(mDefaultDns); 3820 if (DBG) { 3821 loge("no dns provided for netId " + netId + ", so using defaults"); 3822 } 3823 } 3824 if (DBG) log("Setting Dns servers for network " + netId + " to " + dnses); 3825 try { 3826 mNetd.setDnsServersForNetwork(netId, NetworkUtils.makeStrings(dnses), 3827 newLp.getDomains()); 3828 } catch (Exception e) { 3829 loge("Exception in setDnsServersForNetwork: " + e); 3830 } 3831 NetworkAgentInfo defaultNai = mNetworkForRequestId.get(mDefaultRequest.requestId); 3832 if (defaultNai != null && defaultNai.network.netId == netId) { 3833 setDefaultDnsSystemProperties(dnses); 3834 } 3835 flushVmDnsCache(); 3836 } else if (flush) { 3837 try { 3838 mNetd.flushNetworkDnsCache(netId); 3839 } catch (Exception e) { 3840 loge("Exception in flushNetworkDnsCache: " + e); 3841 } 3842 flushVmDnsCache(); 3843 } 3844 } 3845 3846 private void setDefaultDnsSystemProperties(Collection<InetAddress> dnses) { 3847 int last = 0; 3848 for (InetAddress dns : dnses) { 3849 ++last; 3850 String key = "net.dns" + last; 3851 String value = dns.getHostAddress(); 3852 SystemProperties.set(key, value); 3853 } 3854 for (int i = last + 1; i <= mNumDnsEntries; ++i) { 3855 String key = "net.dns" + i; 3856 SystemProperties.set(key, ""); 3857 } 3858 mNumDnsEntries = last; 3859 } 3860 3861 3862 private void updateCapabilities(NetworkAgentInfo networkAgent, 3863 NetworkCapabilities networkCapabilities) { 3864 if (!Objects.equals(networkAgent.networkCapabilities, networkCapabilities)) { 3865 synchronized (networkAgent) { 3866 networkAgent.networkCapabilities = networkCapabilities; 3867 } 3868 rematchAllNetworksAndRequests(networkAgent, networkAgent.getCurrentScore()); 3869 notifyNetworkCallbacks(networkAgent, ConnectivityManager.CALLBACK_CAP_CHANGED); 3870 } 3871 } 3872 3873 private void sendUpdatedScoreToFactories(NetworkAgentInfo nai) { 3874 for (int i = 0; i < nai.networkRequests.size(); i++) { 3875 NetworkRequest nr = nai.networkRequests.valueAt(i); 3876 // Don't send listening requests to factories. b/17393458 3877 if (!isRequest(nr)) continue; 3878 sendUpdatedScoreToFactories(nr, nai.getCurrentScore()); 3879 } 3880 } 3881 3882 private void sendUpdatedScoreToFactories(NetworkRequest networkRequest, int score) { 3883 if (VDBG) log("sending new Min Network Score(" + score + "): " + networkRequest.toString()); 3884 for (NetworkFactoryInfo nfi : mNetworkFactoryInfos.values()) { 3885 nfi.asyncChannel.sendMessage(android.net.NetworkFactory.CMD_REQUEST_NETWORK, score, 0, 3886 networkRequest); 3887 } 3888 } 3889 3890 private void sendPendingIntentForRequest(NetworkRequestInfo nri, NetworkAgentInfo networkAgent, 3891 int notificationType) { 3892 if (notificationType == ConnectivityManager.CALLBACK_AVAILABLE && !nri.mPendingIntentSent) { 3893 Intent intent = new Intent(); 3894 intent.putExtra(ConnectivityManager.EXTRA_NETWORK, networkAgent.network); 3895 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_REQUEST, nri.request); 3896 nri.mPendingIntentSent = true; 3897 sendIntent(nri.mPendingIntent, intent); 3898 } 3899 // else not handled 3900 } 3901 3902 private void sendIntent(PendingIntent pendingIntent, Intent intent) { 3903 mPendingIntentWakeLock.acquire(); 3904 try { 3905 if (DBG) log("Sending " + pendingIntent); 3906 pendingIntent.send(mContext, 0, intent, this /* onFinished */, null /* Handler */); 3907 } catch (PendingIntent.CanceledException e) { 3908 if (DBG) log(pendingIntent + " was not sent, it had been canceled."); 3909 mPendingIntentWakeLock.release(); 3910 releasePendingNetworkRequest(pendingIntent); 3911 } 3912 // ...otherwise, mPendingIntentWakeLock.release() gets called by onSendFinished() 3913 } 3914 3915 @Override 3916 public void onSendFinished(PendingIntent pendingIntent, Intent intent, int resultCode, 3917 String resultData, Bundle resultExtras) { 3918 if (DBG) log("Finished sending " + pendingIntent); 3919 mPendingIntentWakeLock.release(); 3920 // Release with a delay so the receiving client has an opportunity to put in its 3921 // own request. 3922 releasePendingNetworkRequestWithDelay(pendingIntent); 3923 } 3924 3925 private void callCallbackForRequest(NetworkRequestInfo nri, 3926 NetworkAgentInfo networkAgent, int notificationType) { 3927 if (nri.messenger == null) return; // Default request has no msgr 3928 Bundle bundle = new Bundle(); 3929 bundle.putParcelable(NetworkRequest.class.getSimpleName(), 3930 new NetworkRequest(nri.request)); 3931 Message msg = Message.obtain(); 3932 if (notificationType != ConnectivityManager.CALLBACK_UNAVAIL && 3933 notificationType != ConnectivityManager.CALLBACK_RELEASED) { 3934 bundle.putParcelable(Network.class.getSimpleName(), networkAgent.network); 3935 } 3936 switch (notificationType) { 3937 case ConnectivityManager.CALLBACK_LOSING: { 3938 msg.arg1 = 30 * 1000; // TODO - read this from NetworkMonitor 3939 break; 3940 } 3941 case ConnectivityManager.CALLBACK_CAP_CHANGED: { 3942 bundle.putParcelable(NetworkCapabilities.class.getSimpleName(), 3943 new NetworkCapabilities(networkAgent.networkCapabilities)); 3944 break; 3945 } 3946 case ConnectivityManager.CALLBACK_IP_CHANGED: { 3947 bundle.putParcelable(LinkProperties.class.getSimpleName(), 3948 new LinkProperties(networkAgent.linkProperties)); 3949 break; 3950 } 3951 } 3952 msg.what = notificationType; 3953 msg.setData(bundle); 3954 try { 3955 if (VDBG) { 3956 log("sending notification " + notifyTypeToName(notificationType) + 3957 " for " + nri.request); 3958 } 3959 nri.messenger.send(msg); 3960 } catch (RemoteException e) { 3961 // may occur naturally in the race of binder death. 3962 loge("RemoteException caught trying to send a callback msg for " + nri.request); 3963 } 3964 } 3965 3966 private void teardownUnneededNetwork(NetworkAgentInfo nai) { 3967 for (int i = 0; i < nai.networkRequests.size(); i++) { 3968 NetworkRequest nr = nai.networkRequests.valueAt(i); 3969 // Ignore listening requests. 3970 if (!isRequest(nr)) continue; 3971 loge("Dead network still had at least " + nr); 3972 break; 3973 } 3974 nai.asyncChannel.disconnect(); 3975 } 3976 3977 private void handleLingerComplete(NetworkAgentInfo oldNetwork) { 3978 if (oldNetwork == null) { 3979 loge("Unknown NetworkAgentInfo in handleLingerComplete"); 3980 return; 3981 } 3982 if (DBG) log("handleLingerComplete for " + oldNetwork.name()); 3983 teardownUnneededNetwork(oldNetwork); 3984 } 3985 3986 private void makeDefault(NetworkAgentInfo newNetwork) { 3987 if (DBG) log("Switching to new default network: " + newNetwork); 3988 setupDataActivityTracking(newNetwork); 3989 try { 3990 mNetd.setDefaultNetId(newNetwork.network.netId); 3991 } catch (Exception e) { 3992 loge("Exception setting default network :" + e); 3993 } 3994 notifyLockdownVpn(newNetwork); 3995 handleApplyDefaultProxy(newNetwork.linkProperties.getHttpProxy()); 3996 updateTcpBufferSizes(newNetwork); 3997 } 3998 3999 // Handles a network appearing or improving its score. 4000 // 4001 // - Evaluates all current NetworkRequests that can be 4002 // satisfied by newNetwork, and reassigns to newNetwork 4003 // any such requests for which newNetwork is the best. 4004 // 4005 // - Lingers any validated Networks that as a result are no longer 4006 // needed. A network is needed if it is the best network for 4007 // one or more NetworkRequests, or if it is a VPN. 4008 // 4009 // - Tears down newNetwork if it just became validated 4010 // (i.e. nascent==JUST_VALIDATED) but turns out to be unneeded. 4011 // 4012 // - If reapUnvalidatedNetworks==REAP, tears down unvalidated 4013 // networks that have no chance (i.e. even if validated) 4014 // of becoming the highest scoring network. 4015 // 4016 // NOTE: This function only adds NetworkRequests that "newNetwork" could satisfy, 4017 // it does not remove NetworkRequests that other Networks could better satisfy. 4018 // If you need to handle decreases in score, use {@link rematchAllNetworksAndRequests}. 4019 // This function should be used when possible instead of {@code rematchAllNetworksAndRequests} 4020 // as it performs better by a factor of the number of Networks. 4021 // 4022 // @param newNetwork is the network to be matched against NetworkRequests. 4023 // @param nascent indicates if newNetwork just became validated, in which case it should be 4024 // torn down if unneeded. 4025 // @param reapUnvalidatedNetworks indicates if an additional pass over all networks should be 4026 // performed to tear down unvalidated networks that have no chance (i.e. even if 4027 // validated) of becoming the highest scoring network. 4028 private void rematchNetworkAndRequests(NetworkAgentInfo newNetwork, NascentState nascent, 4029 ReapUnvalidatedNetworks reapUnvalidatedNetworks) { 4030 if (!newNetwork.created) return; 4031 if (nascent == NascentState.JUST_VALIDATED && !newNetwork.validated) { 4032 loge("ERROR: nascent network not validated."); 4033 } 4034 boolean keep = newNetwork.isVPN(); 4035 boolean isNewDefault = false; 4036 if (DBG) log("rematching " + newNetwork.name()); 4037 // Find and migrate to this Network any NetworkRequests for 4038 // which this network is now the best. 4039 ArrayList<NetworkAgentInfo> affectedNetworks = new ArrayList<NetworkAgentInfo>(); 4040 if (VDBG) log(" network has: " + newNetwork.networkCapabilities); 4041 for (NetworkRequestInfo nri : mNetworkRequests.values()) { 4042 NetworkAgentInfo currentNetwork = mNetworkForRequestId.get(nri.request.requestId); 4043 if (newNetwork == currentNetwork) { 4044 if (DBG) { 4045 log("Network " + newNetwork.name() + " was already satisfying" + 4046 " request " + nri.request.requestId + ". No change."); 4047 } 4048 keep = true; 4049 continue; 4050 } 4051 4052 // check if it satisfies the NetworkCapabilities 4053 if (VDBG) log(" checking if request is satisfied: " + nri.request); 4054 if (newNetwork.satisfies(nri.request)) { 4055 if (!nri.isRequest) { 4056 // This is not a request, it's a callback listener. 4057 // Add it to newNetwork regardless of score. 4058 newNetwork.addRequest(nri.request); 4059 continue; 4060 } 4061 4062 // next check if it's better than any current network we're using for 4063 // this request 4064 if (VDBG) { 4065 log("currentScore = " + 4066 (currentNetwork != null ? currentNetwork.getCurrentScore() : 0) + 4067 ", newScore = " + newNetwork.getCurrentScore()); 4068 } 4069 if (currentNetwork == null || 4070 currentNetwork.getCurrentScore() < newNetwork.getCurrentScore()) { 4071 if (currentNetwork != null) { 4072 if (DBG) log(" accepting network in place of " + currentNetwork.name()); 4073 currentNetwork.networkRequests.remove(nri.request.requestId); 4074 currentNetwork.networkLingered.add(nri.request); 4075 affectedNetworks.add(currentNetwork); 4076 } else { 4077 if (DBG) log(" accepting network in place of null"); 4078 } 4079 mNetworkForRequestId.put(nri.request.requestId, newNetwork); 4080 newNetwork.addRequest(nri.request); 4081 if (nri.isRequest && nri.request.legacyType != TYPE_NONE) { 4082 mLegacyTypeTracker.add(nri.request.legacyType, newNetwork); 4083 } 4084 keep = true; 4085 // Tell NetworkFactories about the new score, so they can stop 4086 // trying to connect if they know they cannot match it. 4087 // TODO - this could get expensive if we have alot of requests for this 4088 // network. Think about if there is a way to reduce this. Push 4089 // netid->request mapping to each factory? 4090 sendUpdatedScoreToFactories(nri.request, newNetwork.getCurrentScore()); 4091 if (mDefaultRequest.requestId == nri.request.requestId) { 4092 isNewDefault = true; 4093 // TODO: Remove following line. It's redundant with makeDefault call. 4094 if (newNetwork.linkProperties != null) { 4095 updateTcpBufferSizes(newNetwork); 4096 setDefaultDnsSystemProperties( 4097 newNetwork.linkProperties.getDnsServers()); 4098 } else { 4099 setDefaultDnsSystemProperties(new ArrayList<InetAddress>()); 4100 } 4101 // Maintain the illusion: since the legacy API only 4102 // understands one network at a time, we must pretend 4103 // that the current default network disconnected before 4104 // the new one connected. 4105 if (currentNetwork != null) { 4106 mLegacyTypeTracker.remove(currentNetwork.networkInfo.getType(), 4107 currentNetwork); 4108 } 4109 mDefaultInetConditionPublished = newNetwork.validated ? 100 : 0; 4110 mLegacyTypeTracker.add(newNetwork.networkInfo.getType(), newNetwork); 4111 notifyLockdownVpn(newNetwork); 4112 } 4113 } 4114 } 4115 } 4116 // Linger any networks that are no longer needed. 4117 for (NetworkAgentInfo nai : affectedNetworks) { 4118 boolean teardown = !nai.isVPN() && nai.validated; 4119 for (int i = 0; i < nai.networkRequests.size() && teardown; i++) { 4120 NetworkRequest nr = nai.networkRequests.valueAt(i); 4121 try { 4122 if (isRequest(nr)) { 4123 teardown = false; 4124 } 4125 } catch (Exception e) { 4126 loge("Request " + nr + " not found in mNetworkRequests."); 4127 loge(" it came from request list of " + nai.name()); 4128 } 4129 } 4130 if (teardown) { 4131 nai.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_LINGER); 4132 notifyNetworkCallbacks(nai, ConnectivityManager.CALLBACK_LOSING); 4133 } else { 4134 unlinger(nai); 4135 } 4136 } 4137 if (keep) { 4138 if (isNewDefault) { 4139 // Notify system services that this network is up. 4140 makeDefault(newNetwork); 4141 synchronized (ConnectivityService.this) { 4142 // have a new default network, release the transition wakelock in 4143 // a second if it's held. The second pause is to allow apps 4144 // to reconnect over the new network 4145 if (mNetTransitionWakeLock.isHeld()) { 4146 mHandler.sendMessageDelayed(mHandler.obtainMessage( 4147 EVENT_CLEAR_NET_TRANSITION_WAKELOCK, 4148 mNetTransitionWakeLockSerialNumber, 0), 4149 1000); 4150 } 4151 } 4152 } 4153 4154 // Notify battery stats service about this network, both the normal 4155 // interface and any stacked links. 4156 // TODO: Avoid redoing this; this must only be done once when a network comes online. 4157 try { 4158 final IBatteryStats bs = BatteryStatsService.getService(); 4159 final int type = newNetwork.networkInfo.getType(); 4160 4161 final String baseIface = newNetwork.linkProperties.getInterfaceName(); 4162 bs.noteNetworkInterfaceType(baseIface, type); 4163 for (LinkProperties stacked : newNetwork.linkProperties.getStackedLinks()) { 4164 final String stackedIface = stacked.getInterfaceName(); 4165 bs.noteNetworkInterfaceType(stackedIface, type); 4166 NetworkStatsFactory.noteStackedIface(stackedIface, baseIface); 4167 } 4168 } catch (RemoteException ignored) { 4169 } 4170 4171 notifyNetworkCallbacks(newNetwork, ConnectivityManager.CALLBACK_AVAILABLE); 4172 4173 // A VPN generally won't get added to the legacy tracker in the "for (nri)" loop above, 4174 // because usually there are no NetworkRequests it satisfies (e.g., mDefaultRequest 4175 // wants the NOT_VPN capability, so it will never be satisfied by a VPN). So, add the 4176 // newNetwork to the tracker explicitly (it's a no-op if it has already been added). 4177 if (newNetwork.isVPN()) { 4178 mLegacyTypeTracker.add(TYPE_VPN, newNetwork); 4179 } 4180 } else if (nascent == NascentState.JUST_VALIDATED) { 4181 // Only tear down newly validated networks here. Leave unvalidated to either become 4182 // validated (and get evaluated against peers, one losing here), or get reaped (see 4183 // reapUnvalidatedNetworks) if they have no chance of becoming the highest scoring 4184 // network. Networks that have been up for a while and are validated should be torn 4185 // down via the lingering process so communication on that network is given time to 4186 // wrap up. 4187 if (DBG) log("Validated network turns out to be unwanted. Tear it down."); 4188 teardownUnneededNetwork(newNetwork); 4189 } 4190 if (reapUnvalidatedNetworks == ReapUnvalidatedNetworks.REAP) { 4191 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 4192 if (!nai.created || nai.validated || nai.isVPN()) continue; 4193 boolean reap = true; 4194 for (NetworkRequestInfo nri : mNetworkRequests.values()) { 4195 // If this Network is already the highest scoring Network for a request, or if 4196 // there is hope for it to become one if it validated, then don't reap it. 4197 if (nri.isRequest && nai.satisfies(nri.request) && 4198 (nai.networkRequests.get(nri.request.requestId) != null || 4199 // Note that this catches two important cases: 4200 // 1. Unvalidated cellular will not be reaped when unvalidated WiFi 4201 // is currently satisfying the request. This is desirable when 4202 // cellular ends up validating but WiFi does not. 4203 // 2. Unvalidated WiFi will not be reaped when validated cellular 4204 // is currently satsifying the request. This is desirable when 4205 // WiFi ends up validating and out scoring cellular. 4206 mNetworkForRequestId.get(nri.request.requestId).getCurrentScore() < 4207 nai.getCurrentScoreAsValidated())) { 4208 reap = false; 4209 break; 4210 } 4211 } 4212 if (reap) { 4213 if (DBG) log("Reaping " + nai.name()); 4214 teardownUnneededNetwork(nai); 4215 } 4216 } 4217 } 4218 } 4219 4220 // Attempt to rematch all Networks with NetworkRequests. This may result in Networks 4221 // being disconnected. 4222 // If only one Network's score or capabilities have been modified since the last time 4223 // this function was called, pass this Network in via the "changed" arugment, otherwise 4224 // pass null. 4225 // If only one Network has been changed but its NetworkCapabilities have not changed, 4226 // pass in the Network's score (from getCurrentScore()) prior to the change via 4227 // "oldScore", otherwise pass changed.getCurrentScore() or 0 if "changed" is null. 4228 private void rematchAllNetworksAndRequests(NetworkAgentInfo changed, int oldScore) { 4229 // TODO: This may get slow. The "changed" parameter is provided for future optimization 4230 // to avoid the slowness. It is not simply enough to process just "changed", for 4231 // example in the case where "changed"'s score decreases and another network should begin 4232 // satifying a NetworkRequest that "changed" currently satisfies. 4233 4234 // Optimization: Only reprocess "changed" if its score improved. This is safe because it 4235 // can only add more NetworkRequests satisfied by "changed", and this is exactly what 4236 // rematchNetworkAndRequests() handles. 4237 if (changed != null && oldScore < changed.getCurrentScore()) { 4238 rematchNetworkAndRequests(changed, NascentState.NOT_JUST_VALIDATED, 4239 ReapUnvalidatedNetworks.REAP); 4240 } else { 4241 for (Iterator i = mNetworkAgentInfos.values().iterator(); i.hasNext(); ) { 4242 rematchNetworkAndRequests((NetworkAgentInfo)i.next(), 4243 NascentState.NOT_JUST_VALIDATED, 4244 // Only reap the last time through the loop. Reaping before all rematching 4245 // is complete could incorrectly teardown a network that hasn't yet been 4246 // rematched. 4247 i.hasNext() ? ReapUnvalidatedNetworks.DONT_REAP 4248 : ReapUnvalidatedNetworks.REAP); 4249 } 4250 } 4251 } 4252 4253 private void updateInetCondition(NetworkAgentInfo nai, boolean valid) { 4254 // Don't bother updating until we've graduated to validated at least once. 4255 if (!nai.validated) return; 4256 // For now only update icons for default connection. 4257 // TODO: Update WiFi and cellular icons separately. b/17237507 4258 if (!isDefaultNetwork(nai)) return; 4259 4260 int newInetCondition = valid ? 100 : 0; 4261 // Don't repeat publish. 4262 if (newInetCondition == mDefaultInetConditionPublished) return; 4263 4264 mDefaultInetConditionPublished = newInetCondition; 4265 sendInetConditionBroadcast(nai.networkInfo); 4266 } 4267 4268 private void notifyLockdownVpn(NetworkAgentInfo nai) { 4269 if (mLockdownTracker != null) { 4270 if (nai != null && nai.isVPN()) { 4271 mLockdownTracker.onVpnStateChanged(nai.networkInfo); 4272 } else { 4273 mLockdownTracker.onNetworkInfoChanged(); 4274 } 4275 } 4276 } 4277 4278 private void updateNetworkInfo(NetworkAgentInfo networkAgent, NetworkInfo newInfo) { 4279 NetworkInfo.State state = newInfo.getState(); 4280 NetworkInfo oldInfo = null; 4281 synchronized (networkAgent) { 4282 oldInfo = networkAgent.networkInfo; 4283 networkAgent.networkInfo = newInfo; 4284 } 4285 notifyLockdownVpn(networkAgent); 4286 4287 if (oldInfo != null && oldInfo.getState() == state) { 4288 if (VDBG) log("ignoring duplicate network state non-change"); 4289 return; 4290 } 4291 if (DBG) { 4292 log(networkAgent.name() + " EVENT_NETWORK_INFO_CHANGED, going from " + 4293 (oldInfo == null ? "null" : oldInfo.getState()) + 4294 " to " + state); 4295 } 4296 4297 if (state == NetworkInfo.State.CONNECTED && !networkAgent.created) { 4298 try { 4299 // This should never fail. Specifying an already in use NetID will cause failure. 4300 if (networkAgent.isVPN()) { 4301 mNetd.createVirtualNetwork(networkAgent.network.netId, 4302 !networkAgent.linkProperties.getDnsServers().isEmpty(), 4303 (networkAgent.networkMisc == null || 4304 !networkAgent.networkMisc.allowBypass)); 4305 } else { 4306 mNetd.createPhysicalNetwork(networkAgent.network.netId); 4307 } 4308 } catch (Exception e) { 4309 loge("Error creating network " + networkAgent.network.netId + ": " 4310 + e.getMessage()); 4311 return; 4312 } 4313 networkAgent.created = true; 4314 updateLinkProperties(networkAgent, null); 4315 notifyNetworkCallbacks(networkAgent, ConnectivityManager.CALLBACK_PRECHECK); 4316 networkAgent.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_CONNECTED); 4317 if (networkAgent.isVPN()) { 4318 // Temporarily disable the default proxy (not global). 4319 synchronized (mProxyLock) { 4320 if (!mDefaultProxyDisabled) { 4321 mDefaultProxyDisabled = true; 4322 if (mGlobalProxy == null && mDefaultProxy != null) { 4323 sendProxyBroadcast(null); 4324 } 4325 } 4326 } 4327 // TODO: support proxy per network. 4328 } 4329 // Consider network even though it is not yet validated. 4330 rematchNetworkAndRequests(networkAgent, NascentState.NOT_JUST_VALIDATED, 4331 ReapUnvalidatedNetworks.REAP); 4332 } else if (state == NetworkInfo.State.DISCONNECTED || 4333 state == NetworkInfo.State.SUSPENDED) { 4334 networkAgent.asyncChannel.disconnect(); 4335 if (networkAgent.isVPN()) { 4336 synchronized (mProxyLock) { 4337 if (mDefaultProxyDisabled) { 4338 mDefaultProxyDisabled = false; 4339 if (mGlobalProxy == null && mDefaultProxy != null) { 4340 sendProxyBroadcast(mDefaultProxy); 4341 } 4342 } 4343 } 4344 } 4345 } 4346 } 4347 4348 private void updateNetworkScore(NetworkAgentInfo nai, int score) { 4349 if (DBG) log("updateNetworkScore for " + nai.name() + " to " + score); 4350 if (score < 0) { 4351 loge("updateNetworkScore for " + nai.name() + " got a negative score (" + score + 4352 "). Bumping score to min of 0"); 4353 score = 0; 4354 } 4355 4356 final int oldScore = nai.getCurrentScore(); 4357 nai.setCurrentScore(score); 4358 4359 rematchAllNetworksAndRequests(nai, oldScore); 4360 4361 sendUpdatedScoreToFactories(nai); 4362 } 4363 4364 // notify only this one new request of the current state 4365 protected void notifyNetworkCallback(NetworkAgentInfo nai, NetworkRequestInfo nri) { 4366 int notifyType = ConnectivityManager.CALLBACK_AVAILABLE; 4367 // TODO - read state from monitor to decide what to send. 4368// if (nai.networkMonitor.isLingering()) { 4369// notifyType = NetworkCallbacks.LOSING; 4370// } else if (nai.networkMonitor.isEvaluating()) { 4371// notifyType = NetworkCallbacks.callCallbackForRequest(request, nai, notifyType); 4372// } 4373 if (nri.mPendingIntent == null) { 4374 callCallbackForRequest(nri, nai, notifyType); 4375 } else { 4376 sendPendingIntentForRequest(nri, nai, notifyType); 4377 } 4378 } 4379 4380 private void sendLegacyNetworkBroadcast(NetworkAgentInfo nai, boolean connected, int type) { 4381 // The NetworkInfo we actually send out has no bearing on the real 4382 // state of affairs. For example, if the default connection is mobile, 4383 // and a request for HIPRI has just gone away, we need to pretend that 4384 // HIPRI has just disconnected. So we need to set the type to HIPRI and 4385 // the state to DISCONNECTED, even though the network is of type MOBILE 4386 // and is still connected. 4387 NetworkInfo info = new NetworkInfo(nai.networkInfo); 4388 info.setType(type); 4389 if (connected) { 4390 info.setDetailedState(DetailedState.CONNECTED, null, info.getExtraInfo()); 4391 sendConnectedBroadcastDelayed(info, getConnectivityChangeDelay()); 4392 } else { 4393 info.setDetailedState(DetailedState.DISCONNECTED, null, info.getExtraInfo()); 4394 Intent intent = new Intent(ConnectivityManager.CONNECTIVITY_ACTION); 4395 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_INFO, info); 4396 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_TYPE, info.getType()); 4397 if (info.isFailover()) { 4398 intent.putExtra(ConnectivityManager.EXTRA_IS_FAILOVER, true); 4399 nai.networkInfo.setFailover(false); 4400 } 4401 if (info.getReason() != null) { 4402 intent.putExtra(ConnectivityManager.EXTRA_REASON, info.getReason()); 4403 } 4404 if (info.getExtraInfo() != null) { 4405 intent.putExtra(ConnectivityManager.EXTRA_EXTRA_INFO, info.getExtraInfo()); 4406 } 4407 NetworkAgentInfo newDefaultAgent = null; 4408 if (nai.networkRequests.get(mDefaultRequest.requestId) != null) { 4409 newDefaultAgent = mNetworkForRequestId.get(mDefaultRequest.requestId); 4410 if (newDefaultAgent != null) { 4411 intent.putExtra(ConnectivityManager.EXTRA_OTHER_NETWORK_INFO, 4412 newDefaultAgent.networkInfo); 4413 } else { 4414 intent.putExtra(ConnectivityManager.EXTRA_NO_CONNECTIVITY, true); 4415 } 4416 } 4417 intent.putExtra(ConnectivityManager.EXTRA_INET_CONDITION, 4418 mDefaultInetConditionPublished); 4419 final Intent immediateIntent = new Intent(intent); 4420 immediateIntent.setAction(CONNECTIVITY_ACTION_IMMEDIATE); 4421 sendStickyBroadcast(immediateIntent); 4422 sendStickyBroadcastDelayed(intent, getConnectivityChangeDelay()); 4423 if (newDefaultAgent != null) { 4424 sendConnectedBroadcastDelayed(newDefaultAgent.networkInfo, 4425 getConnectivityChangeDelay()); 4426 } 4427 } 4428 } 4429 4430 protected void notifyNetworkCallbacks(NetworkAgentInfo networkAgent, int notifyType) { 4431 if (DBG) log("notifyType " + notifyTypeToName(notifyType) + " for " + networkAgent.name()); 4432 for (int i = 0; i < networkAgent.networkRequests.size(); i++) { 4433 NetworkRequest nr = networkAgent.networkRequests.valueAt(i); 4434 NetworkRequestInfo nri = mNetworkRequests.get(nr); 4435 if (VDBG) log(" sending notification for " + nr); 4436 if (nri.mPendingIntent == null) { 4437 callCallbackForRequest(nri, networkAgent, notifyType); 4438 } else { 4439 sendPendingIntentForRequest(nri, networkAgent, notifyType); 4440 } 4441 } 4442 } 4443 4444 private String notifyTypeToName(int notifyType) { 4445 switch (notifyType) { 4446 case ConnectivityManager.CALLBACK_PRECHECK: return "PRECHECK"; 4447 case ConnectivityManager.CALLBACK_AVAILABLE: return "AVAILABLE"; 4448 case ConnectivityManager.CALLBACK_LOSING: return "LOSING"; 4449 case ConnectivityManager.CALLBACK_LOST: return "LOST"; 4450 case ConnectivityManager.CALLBACK_UNAVAIL: return "UNAVAILABLE"; 4451 case ConnectivityManager.CALLBACK_CAP_CHANGED: return "CAP_CHANGED"; 4452 case ConnectivityManager.CALLBACK_IP_CHANGED: return "IP_CHANGED"; 4453 case ConnectivityManager.CALLBACK_RELEASED: return "RELEASED"; 4454 } 4455 return "UNKNOWN"; 4456 } 4457 4458 @Override 4459 public boolean addVpnAddress(String address, int prefixLength) { 4460 throwIfLockdownEnabled(); 4461 int user = UserHandle.getUserId(Binder.getCallingUid()); 4462 synchronized (mVpns) { 4463 return mVpns.get(user).addAddress(address, prefixLength); 4464 } 4465 } 4466 4467 @Override 4468 public boolean removeVpnAddress(String address, int prefixLength) { 4469 throwIfLockdownEnabled(); 4470 int user = UserHandle.getUserId(Binder.getCallingUid()); 4471 synchronized (mVpns) { 4472 return mVpns.get(user).removeAddress(address, prefixLength); 4473 } 4474 } 4475 4476 @Override 4477 public boolean setUnderlyingNetworksForVpn(Network[] networks) { 4478 throwIfLockdownEnabled(); 4479 int user = UserHandle.getUserId(Binder.getCallingUid()); 4480 synchronized (mVpns) { 4481 return mVpns.get(user).setUnderlyingNetworks(networks); 4482 } 4483 } 4484} 4485